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# nick        = xkcd
# url         = https://feeds.twtxt.net/xkcd/twtxt.txt
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# updated_at  = 2022-09-26T15:17:58Z
#
2020-07-09T01:54:52Z	Acceptable Risk ⌘ https://xkcd.com/2330/
2020-07-09T01:54:52Z	Universal Rating Scale ⌘ https://xkcd.com/2329/
2020-07-09T01:54:52Z	Space Basketball ⌘ https://xkcd.com/2328/
2020-07-09T01:54:52Z	Oily House Index ⌘ https://xkcd.com/2327/
2020-07-10T22:11:40Z	Hamster Ball 2 ⌘ https://xkcd.com/2331/
2020-07-13T23:03:12Z	Cursed Chair ⌘ https://xkcd.com/2332/
2020-07-15T16:25:44Z	COVID Risk Chart ⌘ https://xkcd.com/2333/
2020-07-17T04:00:00Z	Slide Trombone ⌘ https://xkcd.com/2334/
2020-07-20T04:00:00Z	Photo Deposit ⌘ https://xkcd.com/2335/
2020-07-22T04:00:00Z	Campfire Habitable Zone ⌘ https://xkcd.com/2336/
2020-07-24T04:00:00Z	Asterisk Corrections ⌘ https://xkcd.com/2337/
2020-07-27T04:00:00Z	Faraday Tour ⌘ https://xkcd.com/2338/
2020-07-29T04:00:00Z	Pods vs Bubbles ⌘ https://xkcd.com/2339/
2020-07-31T04:00:00Z	Cosmologist Genres ⌘ https://xkcd.com/2340/
2020-08-03T04:00:00Z	Scientist Tech Help ⌘ https://xkcd.com/2341/
2020-08-05T04:00:00Z	Exposure Notification ⌘ https://xkcd.com/2342/
2020-08-07T04:00:00Z	Mathematical Symbol Fight ⌘ https://xkcd.com/2343/
2020-08-10T04:00:00Z	26-Second Pulse ⌘ https://xkcd.com/2344/
2020-08-12T04:00:00Z	Wish on a Shooting Star ⌘ https://xkcd.com/2345/
2020-08-14T04:00:00Z	COVID Risk Comfort Zone ⌘ https://xkcd.com/2346/
2020-08-17T04:00:00Z	Dependency ⌘ https://xkcd.com/2347/
2020-08-19T04:00:00Z	Boat Puzzle ⌘ https://xkcd.com/2348/
2020-08-21T04:00:00Z	Rabbit Introduction ⌘ https://xkcd.com/2349/
2020-08-24T04:00:00Z	Deer Turrets ⌘ https://xkcd.com/2350/
2020-08-26T04:00:00Z	Standard Model Changes ⌘ https://xkcd.com/2351/
2020-08-28T04:00:00Z	Synonym Date ⌘ https://xkcd.com/2352/
2020-08-31T04:00:00Z	Hurricane Hunters ⌘ https://xkcd.com/2353/
2020-09-02T04:00:00Z	Stellar Evolution ⌘ https://xkcd.com/2354/
2020-09-04T04:00:00Z	University COVID Model ⌘ https://xkcd.com/2355/
2020-09-07T04:00:00Z	Constellation Monstrosity ⌘ https://xkcd.com/2356/
2020-09-09T04:00:00Z	Polls vs the Street ⌘ https://xkcd.com/2357/
2020-09-11T04:00:00Z	Gravitational Wave Pulsars ⌘ https://xkcd.com/2358/
2020-09-14T04:00:00Z	Evidence of Alien Life ⌘ https://xkcd.com/2359/
2020-09-16T04:00:00Z	Common Star Types ⌘ https://xkcd.com/2360/
2020-09-18T04:00:00Z	Voting ⌘ https://xkcd.com/2361/
2020-09-21T04:00:00Z	Volcano Dinosaur ⌘ https://xkcd.com/2362/
2020-09-23T04:00:00Z	Message Boards ⌘ https://xkcd.com/2363/
2020-09-25T04:00:00Z	Parity Conservation ⌘ https://xkcd.com/2364/
2020-09-28T04:00:00Z	Messaging Systems ⌘ https://xkcd.com/2365/
2020-09-30T04:00:00Z	Amelia's Farm Fresh Cookies ⌘ https://xkcd.com/2366/
2020-10-02T04:00:00Z	Masks ⌘ https://xkcd.com/2367/
2020-10-05T04:00:00Z	Bigger Problem ⌘ https://xkcd.com/2368/
2020-10-07T04:00:00Z	All-in-One ⌘ https://xkcd.com/2369/
2020-10-09T04:00:00Z	Prediction ⌘ https://xkcd.com/2370/
2020-10-12T04:00:00Z	Election Screen Time ⌘ https://xkcd.com/2371/
2020-10-14T04:00:00Z	Dialect Quiz ⌘ https://xkcd.com/2372/
2020-10-16T04:00:00Z	Chemist Eggs ⌘ https://xkcd.com/2373/
2020-10-19T04:00:00Z	10,000 Hours ⌘ https://xkcd.com/2374/
2020-10-21T04:00:00Z	Worst Ladder ⌘ https://xkcd.com/2375/
2020-10-23T04:00:00Z	Curbside ⌘ https://xkcd.com/2376/
2020-10-26T04:00:00Z	xkcd Phone 12 ⌘ https://xkcd.com/2377/
2020-10-28T04:00:00Z	Fall Back ⌘ https://xkcd.com/2378/
2020-10-30T04:00:00Z	Probability Comparisons ⌘ https://xkcd.com/2379/
2020-11-02T05:00:00Z	Election Impact Score Sheet ⌘ https://xkcd.com/2380/
2020-11-04T05:00:00Z	The True Name of the Bear ⌘ https://xkcd.com/2381/
2020-11-06T05:00:00Z	Ballot Tracker Tracker ⌘ https://xkcd.com/2382/
2020-11-09T05:00:00Z	Electoral Precedent 2020 ⌘ https://xkcd.com/2383/
2020-11-11T05:00:00Z	Set in the Present ⌘ https://xkcd.com/2384/
2020-11-13T05:00:00Z	Final Exam ⌘ https://xkcd.com/2385/
2020-11-16T05:00:00Z	Ten Years ⌘ https://xkcd.com/2386/
2020-11-18T05:00:00Z	Blair Witch ⌘ https://xkcd.com/2387/
2020-11-20T05:00:00Z	Viral Quiz Identity Theft ⌘ https://xkcd.com/2388/
2020-11-23T05:00:00Z	Unread ⌘ https://xkcd.com/2389/
2020-11-25T05:00:00Z	Linguists ⌘ https://xkcd.com/2390/
2020-11-27T05:00:00Z	Life Before the Pandemic ⌘ https://xkcd.com/2391/
2020-11-30T05:00:00Z	Cyber Cafe ⌘ https://xkcd.com/2392/
2020-12-02T05:00:00Z	Presidential Middle Names ⌘ https://xkcd.com/2393/
2020-12-04T05:00:00Z	Contiguous 41 States ⌘ https://xkcd.com/2394/
2020-12-07T05:00:00Z	Covid Precaution Level ⌘ https://xkcd.com/2395/
2020-12-09T05:00:00Z	Wonder Woman 1984 ⌘ https://xkcd.com/2396/
2020-12-11T05:00:00Z	I Just Don't Trust Them ⌘ https://xkcd.com/2397/
2020-12-14T05:00:00Z	Vaccine Tracker ⌘ https://xkcd.com/2398/
2020-12-16T05:00:00Z	2020 Election Map ⌘ https://xkcd.com/2399/
2020-12-18T05:00:00Z	Statistics ⌘ https://xkcd.com/2400/
2020-12-21T05:00:00Z	Conjunction ⌘ https://xkcd.com/2401/
2020-12-23T05:00:00Z	Into My Veins ⌘ https://xkcd.com/2402/
2020-12-25T05:00:00Z	Wrapping Paper ⌘ https://xkcd.com/2403/
2020-12-28T05:00:00Z	First Thing ⌘ [Read more...](https://xkcd.com/2404/)
2020-12-30T05:00:00Z	Flash Gatsby ⌘ [Read more...](https://xkcd.com/2405/)
2021-01-01T05:00:00Z	Viral Vector Immunity ⌘ [Read more...](https://xkcd.com/2406/)
2021-01-04T05:00:00Z	Depth and Breadth ⌘ [Read more...](https://xkcd.com/2407/)
2021-01-06T05:00:00Z	Egg Strategies ⌘ [Read more...](https://xkcd.com/2408/)
2021-01-08T05:00:00Z	Steepen the Curve ⌘ [Read more...](https://xkcd.com/2409/)
2021-01-11T05:00:00Z	Apple Growers ⌘ [Read more...](https://xkcd.com/2410/)
2021-01-13T05:00:00Z	1/10,000th Scale World ⌘ [Read more...](https://xkcd.com/2411/)
2021-01-15T05:00:00Z	1/100,000th Scale World ⌘ [Read more...](https://xkcd.com/2412/)
2021-01-18T05:00:00Z	Pulsar Analogy ⌘ [Read more...](https://xkcd.com/2413/)
2021-01-20T05:00:00Z	Solar System Compression Artifacts ⌘ [Read more...](https://xkcd.com/2414/)
2021-01-22T05:00:00Z	Allow Captcha ⌘ [Read more...](https://xkcd.com/2415/)
2021-01-25T05:00:00Z	Trash Compactor Party ⌘ [Read more...](https://xkcd.com/2416/)
2021-01-27T05:00:00Z	1/1,000th Scale World ⌘ [Read more...](https://xkcd.com/2417/)
2021-01-29T05:00:00Z	Metacarcinization ⌘ [Read more...](https://xkcd.com/2418/)
2021-02-01T05:00:00Z	Hug Count ⌘ [Read more...](https://xkcd.com/2419/)
2021-02-03T05:00:00Z	Appliances ⌘ [Read more...](https://xkcd.com/2420/)
2021-02-05T05:00:00Z	Tower of Babel ⌘ [Read more...](https://xkcd.com/2421/)
2021-02-08T05:00:00Z	Vaccine Ordering ⌘ [Read more...](https://xkcd.com/2422/)
2021-02-10T05:00:00Z	Project Orion ⌘ [Read more...](https://xkcd.com/2423/)
2021-02-12T05:00:00Z	Normal Conversation ⌘ [Read more...](https://xkcd.com/2424/)
2021-02-15T05:00:00Z	mRNA Vaccine ⌘ [Read more...](https://xkcd.com/2425/)
2021-02-17T05:00:00Z	Animal Songs ⌘ [Read more...](https://xkcd.com/2426/)
2021-02-19T05:00:00Z	Perseverance Microphones ⌘ [Read more...](https://xkcd.com/2427/)
2021-02-22T05:00:00Z	Mars Landing Video ⌘ [Read more...](https://xkcd.com/2428/)
2021-02-24T05:00:00Z	Exposure Models ⌘ [Read more...](https://xkcd.com/2429/)
2021-02-26T05:00:00Z	Post-Pandemic Hat ⌘ [Read more...](https://xkcd.com/2430/)
2021-03-01T05:00:00Z	Leap Year 2021 ⌘ [Read more...](https://xkcd.com/2431/)
2021-03-03T05:00:00Z	Manage Your Preferences ⌘ [Read more...](https://xkcd.com/2432/)
2021-03-05T05:00:00Z	Mars Rovers ⌘ [Read more...](https://xkcd.com/2433/)
2021-03-08T05:00:00Z	Vaccine Guidance ⌘ [Read more...](https://xkcd.com/2434/)
2021-03-10T05:00:00Z	Geothmetic Meandian ⌘ [Read more...](https://xkcd.com/2435/)
2021-03-12T05:00:00Z	Circles ⌘ [Read more...](https://xkcd.com/2436/)
2021-03-15T04:00:00Z	Post-Vaccine Party ⌘ [Read more...](https://xkcd.com/2437/)
2021-03-17T04:00:00Z	Siri ⌘ [Read more...](https://xkcd.com/2438/)
2021-03-19T04:00:00Z	Solar System Cartogram ⌘ [Read more...](https://xkcd.com/2439/)
2021-03-22T04:00:00Z	Epistemic Uncertainty ⌘ [Read more...](https://xkcd.com/2440/)
2021-03-24T04:00:00Z	IMDb Vaccines ⌘ [Read more...](https://xkcd.com/2441/)
2021-03-26T04:00:00Z	Mask Opinions ⌘ [Read more...](https://xkcd.com/2442/)
2021-03-29T04:00:00Z	Immune Response ⌘ [Read more...](https://xkcd.com/2443/)
2021-03-31T04:00:00Z	Ingenuity ⌘ [Read more...](https://xkcd.com/2444/)
2021-04-01T04:00:00Z	Checkbox ⌘ [Read more...](https://xkcd.com/2445/)
2021-04-05T04:00:00Z	Spike Proteins ⌘ [Read more...](https://xkcd.com/2446/)
2021-04-07T04:00:00Z	Hammer Incident ⌘ [Read more...](https://xkcd.com/2447/)
2021-04-09T04:00:00Z	Eradication ⌘ [Read more...](https://xkcd.com/2448/)
2021-04-12T04:00:00Z	ISS Vaccine ⌘ [Read more...](https://xkcd.com/2449/)
2021-04-14T04:00:00Z	Post Vaccine Social Scheduling ⌘ [Read more...](https://xkcd.com/2450/)
2021-04-16T04:00:00Z	AI Methodology ⌘ [Read more...](https://xkcd.com/2451/)
2021-04-19T04:00:00Z	Aviation Firsts ⌘ [Read more...](https://xkcd.com/2452/)
2021-04-21T04:00:00Z	Excel Lambda ⌘ [Read more...](https://xkcd.com/2453/)
2021-04-23T04:00:00Z	Fully Vaccinated ⌘ [Read more...](https://xkcd.com/2454/)
2021-04-26T04:00:00Z	Virus Consulting ⌘ [Read more...](https://xkcd.com/2455/)
2021-04-28T04:00:00Z	Types of Scientific Paper ⌘ [Read more...](https://xkcd.com/2456/)
2021-04-30T04:00:00Z	After the Pandemic ⌘ [Read more...](https://xkcd.com/2457/)
2021-05-03T04:00:00Z	Bubble Wrap ⌘ [Read more...](https://xkcd.com/2458/)
2021-05-05T04:00:00Z	March 2020 ⌘ [Read more...](https://xkcd.com/2459/)
2021-05-07T04:00:00Z	Vaccinated ⌘ [Read more...](https://xkcd.com/2460/)
2021-05-10T04:00:00Z	90's Kid Space Program ⌘ [Read more...](https://xkcd.com/2461/)
2021-05-12T04:00:00Z	NASA Award ⌘ [Read more...](https://xkcd.com/2462/)
2021-05-14T04:00:00Z	Astrophotography ⌘ [Read more...](https://xkcd.com/2463/)
2021-05-17T04:00:00Z	Muller's Ratchet ⌘ [Read more...](https://xkcd.com/2464/)
2021-05-19T04:00:00Z	Dimensional Chess ⌘ [Read more...](https://xkcd.com/2465/)
2021-05-21T04:00:00Z	In Your Classroom ⌘ [Read more...](https://xkcd.com/2466/)
2021-05-24T04:00:00Z	Wikipedia Caltrops ⌘ [Read more...](https://xkcd.com/2467/)
2021-05-26T04:00:00Z	Inheritance ⌘ [Read more...](https://xkcd.com/2468/)
2021-05-28T04:00:00Z	Astronomy Status Board ⌘ [Read more...](https://xkcd.com/2469/)
2021-05-31T04:00:00Z	Next Slide Please ⌘ [Read more...](https://xkcd.com/2470/)
2021-06-02T04:00:00Z	Hippo Attacks ⌘ [Read more...](https://xkcd.com/2471/)
2021-06-04T04:00:00Z	Fuzzy Blob ⌘ [Read more...](https://xkcd.com/2472/)
2021-06-07T04:00:00Z	Product Launch ⌘ [Read more...](https://xkcd.com/2473/)
2021-06-09T04:00:00Z	First Time Since Early 2020 ⌘ [Read more...](https://xkcd.com/2474/)
2021-06-11T04:00:00Z	Health Drink ⌘ [Read more...](https://xkcd.com/2475/)
2021-06-14T04:00:00Z	Base Rate ⌘ [Read more...](https://xkcd.com/2476/)
2021-06-16T04:00:00Z	Alien Visitors ⌘ [Read more...](https://xkcd.com/2477/)
2021-06-18T04:00:00Z	Alien Visitors 2 ⌘ [Read more...](https://xkcd.com/2478/)
2021-06-21T04:00:00Z	Houseguests ⌘ [Read more...](https://xkcd.com/2479/)
2021-06-23T04:00:00Z	No, The Other One ⌘ [Read more...](https://xkcd.com/2480/)
2021-06-25T04:00:00Z	1991 and 2021 ⌘ [Read more...](https://xkcd.com/2481/)
2021-06-28T04:00:00Z	Indoor Socializing ⌘ [Read more...](https://xkcd.com/2482/)
2021-06-30T04:00:00Z	Linked List Interview Problem ⌘ [Read more...](https://xkcd.com/2483/)
2021-07-02T04:00:00Z	H-alpha ⌘ [Read more...](https://xkcd.com/2484/)
2021-07-05T04:00:00Z	Nightmare Code ⌘ [Read more...](https://xkcd.com/2485/)
2021-07-07T04:00:00Z	Board Game Party Schedule ⌘ [Read more...](https://xkcd.com/2486/)
2021-07-09T04:00:00Z	Danger Mnemonic ⌘ [Read more...](https://xkcd.com/2487/)
2021-07-12T04:00:00Z	Board Game Argument: Legacy ⌘ [Read more...](https://xkcd.com/2488/)
2021-07-14T04:00:00Z	Bad Map Projection: The Greenland Special ⌘ [Read more...](https://xkcd.com/2489/)
2021-07-16T04:00:00Z	Pre-Pandemic Ketchup ⌘ [Read more...](https://xkcd.com/2490/)
2021-07-19T04:00:00Z	Immune Factory ⌘ [Read more...](https://xkcd.com/2491/)
2021-07-21T04:00:00Z	Commonly Mispronounced Equations ⌘ [Read more...](https://xkcd.com/2492/)
2021-07-23T04:00:00Z	Dual USB-C ⌘ [Read more...](https://xkcd.com/2493/)
2021-07-26T04:00:00Z	Flawed Data ⌘ [Read more...](https://xkcd.com/2494/)
2021-07-28T04:00:00Z	Universal Seat Belt ⌘ [Read more...](https://xkcd.com/2495/)
2021-07-30T04:00:00Z	Mine Captcha ⌘ [Read more...](https://xkcd.com/2496/)
2021-08-02T04:00:00Z	Logic Gates ⌘ [Read more...](https://xkcd.com/2497/)
2021-08-04T04:00:00Z	Forest Walk ⌘ [Read more...](https://xkcd.com/2498/)
2021-08-06T04:00:00Z	Abandonment Function ⌘ [Read more...](https://xkcd.com/2499/)
2021-08-09T04:00:00Z	**Global Temperature Over My Lifetime**
![I was really impressed by the accuracy of some of the report's predictions about fossil fuel consumption. Then I realized, oh, right, of course.](https://imgs.xkcd.com/comics/global_temperature_over_my_lifetime.png) ⌘ [Read more](https://xkcd.com/2500/)
2021-08-11T04:00:00Z	**Average Familiarity**
![How could anyone consider themselves a well-rounded adult without a basic understanding of silicate geochemistry? Silicates are everywhere! It's hard to throw a rock without throwing one!](https://imgs.xkcd.com/comics/average_familiarity.png) ⌘ [Read more](https://xkcd.com/2501/)
2021-08-13T04:00:00Z	**Every Data Table**
![I'm hoping 2022 is relatively normal because I don't know what symbol comes after the asterisk and the dagger.](https://imgs.xkcd.com/comics/every_data_table.png) ⌘ [Read more](https://xkcd.com/2502/)
2021-08-16T04:00:00Z	**Memo Spike Connector**
![Backward-compatible with many existing cables, and can connect directly to phones or tablets if you press them down hard enough.](https://imgs.xkcd.com/comics/memo_spike_connector.png) ⌘ [Read more](https://xkcd.com/2503/)
2021-08-18T04:00:00Z	**Fissile Raspberry Isotopes**
![Grandma's shelf-stable blackberry pie meson recipe was a huge seller until her farm was shut down by a joint FDA/NRC investigation.](https://imgs.xkcd.com/comics/fissile_raspberry_isotopes.png) ⌘ [Read more](https://xkcd.com/2504/)
2021-08-20T04:00:00Z	**News Story Reaction**
![Unless the next line is, "After we broke up, she blamed the painting and spent years planning her revenge, so my sorrow is mixed with relief that the dogs at least denied her that triumph."](https://imgs.xkcd.com/comics/news_story_reaction.png) ⌘ [Read more](https://xkcd.com/2505/)
2021-08-23T04:00:00Z	**Projecting**
![This is something we all need to work on, but especially you all.](https://imgs.xkcd.com/comics/projecting.png) ⌘ [Read more](https://xkcd.com/2506/)
2021-08-25T04:00:00Z	**USV-C**
![Ultra-Serial Violet C light is unpolarized, so you don't have to flip the polarizing filter over when you get the orientation wrong the first time.](https://imgs.xkcd.com/comics/usv_c.png) ⌘ [Read more](https://xkcd.com/2507/)
2021-08-27T04:00:00Z	**Circumappendiceal Somectomy**
![Some personal news: After treating my first case a few years ago with antibiotics, I can report that I have now had appendicitis for the second and--unless something extremely unexpected happened with the surgery--final time.](https://imgs.xkcd.com/comics/circumappendiceal_somectomy.png) ⌘ [Read more](https://xkcd.com/2508/)
2021-08-30T04:00:00Z	**Useful Geometry Formulas**
![Geometry textbooks always try to trick you by adding decorative stripes and dotted lines.](https://imgs.xkcd.com/comics/useful_geometry_formulas.png) ⌘ [Read more](https://xkcd.com/2509/)
2021-09-01T04:00:00Z	**Modern Tools**
![I tried to train an AI to repair my Python environment but it kept giving up and deleting itself.](https://imgs.xkcd.com/comics/modern_tools.png) ⌘ [Read more](https://xkcd.com/2510/)
2021-09-03T04:00:00Z	**Recreate the Conditions**
![We've almost finished constructing the piña collider.](https://imgs.xkcd.com/comics/recreate_the_conditions.png) ⌘ [Read more](https://xkcd.com/2511/)
2021-09-06T04:00:00Z	**Revelation**
![And the heaven departed as a scroll when it is rolled together, but then more heaven kept appearing to replace it, as if the scroll was infinite.](https://imgs.xkcd.com/comics/revelation.png) ⌘ [Read more](https://xkcd.com/2512/)
2021-09-08T04:00:00Z	**Saturn Hexagon**
![Sorry, in SI units that's "there's a big football in there."](https://imgs.xkcd.com/comics/saturn_hexagon.png) ⌘ [Read more](https://xkcd.com/2513/)
2021-09-10T04:00:00Z	**Lab Equipment**
![I've been working on chocolate bar annealing techniques to try to produce the perfect laser s'more. Maybe don't mention that on the grant application though.](https://imgs.xkcd.com/comics/lab_equipment.png) ⌘ [Read more](https://xkcd.com/2514/)
2021-09-13T04:00:00Z	**Vaccine Research**
![Honestly feel a little sheepish about the amount of time and effort I spent confirming "yes, the vaccine helps protect people from getting sick and dying" but I guess everyone needs a hobby.](https://imgs.xkcd.com/comics/vaccine_research.png) ⌘ [Read more](https://xkcd.com/2515/)
2021-09-15T04:00:00Z	**Hubble Tension**
![Oh, wait, I might've had it set to kph instead of mph. But that would make the discrepancy even wider!](https://imgs.xkcd.com/comics/hubble_tension.png) ⌘ [Read more](https://xkcd.com/2516/)
2021-09-17T04:00:00Z	**Rover Replies**
![I'm so glad NASA let you take your phone to Mars!](https://imgs.xkcd.com/comics/rover_replies.png) ⌘ [Read more](https://xkcd.com/2517/)
2021-09-20T04:00:00Z	**Lumpers and Splitters**
![Anna Karenina is a happy family lumper and unhappy family splitter.](https://imgs.xkcd.com/comics/lumpers_and_splitters.png) ⌘ [Read more](https://xkcd.com/2518/)
2021-09-22T04:00:00Z	**Sloped Border**
!["The slope will be 74° at ground level." "Okay, I think we can hack together a  ... wait, why did they specify ground level? It's 74° everywhere, right? ... Oh no, there's a whole section in the treaty labeled 'curvature.'"](https://imgs.xkcd.com/comics/sloped_border.png) ⌘ [Read more](https://xkcd.com/2519/)
2021-09-24T04:00:00Z	**Symbols**
!["röntgen" and "rem" are 20th-century physics terms that mean "no trespassing."](https://imgs.xkcd.com/comics/symbols.png) ⌘ [Read more](https://xkcd.com/2520/)
2021-09-27T04:00:00Z	**Toothpaste**
!["9 out of 10 dentists have banned me from their offices."](https://imgs.xkcd.com/comics/toothpaste.png) ⌘ [Read more](https://xkcd.com/2521/)
2021-09-29T04:00:00Z	**Two-Factor Security Key**
![The bruises on my fingertips are my proof of work.](https://imgs.xkcd.com/comics/two_factor-security_key.png) ⌘ [Read more](https://xkcd.com/2522/)
2021-10-01T04:00:00Z	**Endangered**
![The list includes polio, Guinea worm, and this one particular enterovirus strain that they've been tracking out of spite after it went around the lab a few years ago.](https://imgs.xkcd.com/comics/endangered.png) ⌘ [Read more](https://xkcd.com/2523/)
2021-10-04T04:00:00Z	**Comet Visitor**
![It's a myth that the Great Wall of China is the only human-made structure visible from space--there are LOTS of structures for us to feel self-conscious about!](https://imgs.xkcd.com/comics/comet_visitor.png) ⌘ [Read more](https://xkcd.com/2524/)
2021-10-06T04:00:00Z	**Air Travel Packing List**
![I know the etiquette is controversial, but I think it's rude when the person in front of me reclines their seat into the bell of my trumpet.](https://imgs.xkcd.com/comics/air_travel_packing_list.png) ⌘ [Read more](https://xkcd.com/2525/)
2021-10-08T04:00:00Z	**Tsp vs Tbsp**
![It's like one teraspoon / when all you need is a kilonife](https://imgs.xkcd.com/comics/tsp_vs_tbsp.png) ⌘ [Read more](https://xkcd.com/2526/)
2021-10-11T04:00:00Z	**New Nobel Prizes**
![They've endowed a separate prize in Physiology or Medicine or Stopping Dr. Adams.](https://imgs.xkcd.com/comics/new_nobel_prizes.png) ⌘ [Read more](https://xkcd.com/2527/)
2021-10-13T04:00:00Z	**Flag Map Sabotage**
![Delaware hopes to explore the western edge of areas marked with the Belgian flag, once the tornadoes die down.](https://imgs.xkcd.com/comics/flag_map_sabotage.png) ⌘ [Read more](https://xkcd.com/2528/)
2021-10-15T04:00:00Z	**Unsolved Math Problems**
![After decades of studying the curve and the procedure that generates it, the consensus explanation is "it's just like that."](https://imgs.xkcd.com/comics/unsolved_math_problems.png) ⌘ [Read more](https://xkcd.com/2529/)
2021-10-18T04:00:00Z	**Clinical Trials**
![We don't need to do a clinical trial of this change because the standard of care is to adopt new ideas without doing clinical trials.](https://imgs.xkcd.com/comics/clinical_trials.png) ⌘ [Read more](https://xkcd.com/2530/)
2021-10-20T04:00:00Z	**Dark Arts**
![You think, 'okay, THIS is an ideal use case for hardlinks!' but then 6 months later you're doing some extremely cursed Google search like 'javascript ext4' and wondering where things went wrong.](https://imgs.xkcd.com/comics/dark_arts.png) ⌘ [Read more](https://xkcd.com/2531/)
2021-10-22T04:00:00Z	**Censored Vaccine Card**
![CVS's pharmacies are fine, but I much prefer their [censored]s.](https://imgs.xkcd.com/comics/censored_vaccine_card.png) ⌘ [Read more](https://xkcd.com/2532/)
2021-10-25T04:00:00Z	**Slope Hypothesis Testing**
!["What? I can't hear--" "What? I said, are you sure--" "CAN YOU PLEASE SPEAK--"](https://imgs.xkcd.com/comics/slope_hypothesis_testing.png) ⌘ [Read more](https://xkcd.com/2533/)
2021-10-27T04:00:00Z	**Retractible Rocket**
![Hard to believe that for so many years once they were fully extended we just let them tip over.](https://imgs.xkcd.com/comics/retractible_rocket.png) ⌘ [Read more](https://xkcd.com/2534/)
2021-10-29T04:00:00Z	**Common Cold Viruses**
!["It's not an influenza, but the onset has notes of the '09 H1N1 strain." "Ah yes, that was a good year for H1N1."](https://imgs.xkcd.com/comics/common_cold_viruses.png) ⌘ [Read more](https://xkcd.com/2535/)
2021-11-01T04:00:00Z	**Wirecutter**
![This was always going to be a controversial Wirecutter post, but what really got them in trouble were their 'budget' and 'upgrade' picks.](https://imgs.xkcd.com/comics/wirecutter.png) ⌘ [Read more](https://xkcd.com/2536/)
2021-11-03T04:00:00Z	**Painbow Award**
![This year, our team took home the dark blue ribbon, better than the midnight blue we got last year but still short of the winning navy blue.](https://imgs.xkcd.com/comics/painbow_award.png) ⌘ [Read more](https://xkcd.com/2537/)
2021-11-05T04:00:00Z	**Snack**
![Although grad students, suddenly reminded that food exists, tend to just grab and devour both without further discussion.](https://imgs.xkcd.com/comics/snack.png) ⌘ [Read more](https://xkcd.com/2538/)
2021-11-08T05:00:00Z	**Flinch**
![Premed: "Does this count for a physics credit? Can we shorten the string so I can get it done faster? And can we do one where it hits me in the face? I gotta do a thing for first aid training right after."](https://imgs.xkcd.com/comics/flinch.png) ⌘ [Read more](https://xkcd.com/2539/)
2021-11-10T05:00:00Z	**TTSLTSWBD**
![Tomorrow's sessions will be entirely devoted to sewing machine rotary hooks.](https://imgs.xkcd.com/comics/ttsltswbd.png) ⌘ [Read more](https://xkcd.com/2540/)
2021-11-12T05:00:00Z	**Occam**
![Oh no, Murphy just picked up the razor.](https://imgs.xkcd.com/comics/occam.png) ⌘ [Read more](https://xkcd.com/2541/)
2021-11-15T05:00:00Z	**Daylight Calendar**
![Could be worse. In some towns north of here, it's already December, and the 21st will last for nearly a week.](https://imgs.xkcd.com/comics/daylight_calendar.png) ⌘ [Read more](https://xkcd.com/2542/)
2021-11-17T05:00:00Z	**Never Told Anyone**
![Even if you said you were an employee of the website, if you asked for my password, I'd tell you.](https://imgs.xkcd.com/comics/never_told_anyone.png) ⌘ [Read more](https://xkcd.com/2543/)
2021-11-19T05:00:00Z	**Heart-Stopping Texts**
![Was this your car? [looping 'image loading' animation]](https://imgs.xkcd.com/comics/heart_stopping_texts.png) ⌘ [Read more](https://xkcd.com/2544/)
2021-11-22T05:00:00Z	**Bayes' Theorem**
![P((B](https://imgs.xkcd.com/comics/bayes_theorem.png) ⌘ [Read more](https://xkcd.com/2545/)
2021-11-24T05:00:00Z	**Fiction vs Nonfiction**
![The real challenge is how to file Boba Fett's biography of Doris Kearns Goodwin.](https://imgs.xkcd.com/comics/fiction_vs_nonfiction.png) ⌘ [Read more](https://xkcd.com/2546/)
2021-11-26T05:00:00Z	**Siren**
![Directions from CITY OF TROY to ITHACA / Total time: 10y 54d 14h 25m / Warning: Route crosses an international border / route includes capture by the goddess Calypso / route includes a ferry](https://imgs.xkcd.com/comics/siren.png) ⌘ [Read more](https://xkcd.com/2547/)
2021-11-29T05:00:00Z	**Awful People**
![Hm, this burger place has a couple of good reviews, but LakeSlayer7 says he got food poisoning there and everyone should try this other place down by the lake instead.](https://imgs.xkcd.com/comics/awful_people.png) ⌘ [Read more](https://xkcd.com/2548/)
2021-12-01T05:00:00Z	**Edge Cake**
![Every time IERS adds or removes a leap second, they send me a birthday cake out of superstition.](https://imgs.xkcd.com/comics/edge_cake.png) ⌘ [Read more](https://xkcd.com/2549/)
2021-12-03T05:00:00Z	**Webb**
![Each one contains a chocolate shaped like a famous spacecraft and, for the later numbers, a pamphlet on managing anxiety.](https://imgs.xkcd.com/comics/webb.png) ⌘ [Read more](https://xkcd.com/2550/)
2021-12-06T05:00:00Z	**Debunking**
![Mark Zuckerberg has only neutral feelings toward Peppa Pig, who he understands is a fictional character, and he blames the coronavirus pandemic on other factors.](https://imgs.xkcd.com/comics/debunking.png) ⌘ [Read more](https://xkcd.com/2551/)
2021-12-08T05:00:00Z	**The Last Molecule**
![Biology is really struggling; they're barely at 93% and they keep finding more ants.](https://imgs.xkcd.com/comics/the_last_molecule.png) ⌘ [Read more](https://xkcd.com/2552/)
2021-12-10T05:00:00Z	**Incident Report**
![Increasing-precision timestamps are the Jaws theme of incident reports.](https://imgs.xkcd.com/comics/incident_report.png) ⌘ [Read more](https://xkcd.com/2553/)
2021-12-13T05:00:00Z	**Gift Exchange**
![In addition to having all their budgets in a spreadsheet with consistent formatting, they just love expressing preferences on a well-calibrated numerical scale.](https://imgs.xkcd.com/comics/gift_exchange.png) ⌘ [Read more](https://xkcd.com/2554/)
2021-12-15T05:00:00Z	**Notifications**
![It's 10:34 PM for this user. They really need to get going, they have a thing early tomorrow. Are you sure you want to notify?](https://imgs.xkcd.com/comics/notifications.png) ⌘ [Read more](https://xkcd.com/2555/)
2021-12-17T05:00:00Z	**Turing Complete**
![Thanks to the ForcedEntry exploit, your company's entire tech stack can now be hosted out of a PDF you texted to someone.](https://imgs.xkcd.com/comics/turing_complete.png) ⌘ [Read more](https://xkcd.com/2556/)
2021-12-20T05:00:00Z	**Immunity**
![This plan may sound appealing to people who know a little about the immune system, but the drawbacks are clear to people who know a lot about the immune system and also to people who don't know anything about it.](https://imgs.xkcd.com/comics/immunity.png) ⌘ [Read more](https://xkcd.com/2557/)
2021-12-22T05:00:00Z	**Rapid Test Results**
![A solid red area with two white lines means that you have been infected with the anti-coronavirus, COVID+19, which will cure anyone you have close contact with.](https://imgs.xkcd.com/comics/rapid_test_results.png) ⌘ [Read more](https://xkcd.com/2558/)
2021-12-24T05:00:00Z	**December 25th Launch**
![Update: Santa has been destroyed by the range safety officer.](https://imgs.xkcd.com/comics/december_25th_launch.png) ⌘ [Read more](https://xkcd.com/2559/)
2021-12-27T05:00:00Z	**Confounding Variables**
![You can find a perfect correlation if you just control for the residual.](https://imgs.xkcd.com/comics/confounding_variables.png) ⌘ [Read more](https://xkcd.com/2560/)
2021-12-29T05:00:00Z	**Moonfall**
![Novel ideas and cool explosions are both good, but what I really want from a movie is novel ideas ABOUT cool explosions.](https://imgs.xkcd.com/comics/moonfall.png) ⌘ [Read more](https://xkcd.com/2561/)
2021-12-31T05:00:00Z	**Formatting Meeting**
![Neither group uses iso 8601 because the big-endian enthusiasts were all at the meeting 20 years ago.](https://imgs.xkcd.com/comics/formatting_meeting.png) ⌘ [Read more](https://xkcd.com/2562/)
2022-01-03T05:00:00Z	**Throat and Nasal Passages**
![I always felt like what the 'you are now aware of your tongue' thing neeeded in order to be truly enjoyable was an element of mortal peril.](https://imgs.xkcd.com/comics/throat_and_nasal_passages.png) ⌘ [Read more](https://xkcd.com/2563/)
2022-01-05T05:00:00Z	**Sunshield**
![RIP the surface of Mars](https://imgs.xkcd.com/comics/sunshield.png) ⌘ [Read more](https://xkcd.com/2564/)
2022-01-07T05:00:00Z	**Latency**
![Each SCAPDFATIAT point increases the chance that the process will involve the phrase 'by the next business day.'](https://imgs.xkcd.com/comics/latency.png) ⌘ [Read more](https://xkcd.com/2565/)
2022-01-10T05:00:00Z	**Decorative Constants**
![Arguably, the '1/2' in the drag equation is purely decorative, since drag coefficients are already unitless and could just as easily be half as big. Some derivations give more justification for the extra 1/2 than others, but one textbook just calls it 'a traditional tribute to Euler and Bernoulli.'](https://imgs.xkcd.com/comics/decorative_constants.png) ⌘ [Read more](https://xkcd.com/2566/)
2022-01-12T05:00:00Z	**Language Development**
![The worst is the Terrible Twos, when they're always throwing things and shrieking, "forsooth, to bed thou shalt not take me, cur!"](https://imgs.xkcd.com/comics/language_development.png) ⌘ [Read more](https://xkcd.com/2567/)
2022-01-14T05:00:00Z	**Spinthariscope**
![Other high scorers are melt-in-your-hand aluminum-destroying gallium and tritium-powered glowsticks. Lawn darts are toward the other end.](https://imgs.xkcd.com/comics/spinthariscope.png) ⌘ [Read more](https://xkcd.com/2568/)
2022-01-17T05:00:00Z	**Hypothesis Generation**
![Frazzled scientists are requesting that everyone please stop generating hypotheses for a little bit while they work through the backlog.](https://imgs.xkcd.com/comics/hypothesis_generation.png) ⌘ [Read more](https://xkcd.com/2569/)
2022-01-19T05:00:00Z	**Captain Picard Tea Order**
![We can ask the Earl for his order once he's fully extruded from the dispenser.](https://imgs.xkcd.com/comics/captain_picard_tea_order.png) ⌘ [Read more](https://xkcd.com/2570/)
2022-01-21T05:00:00Z	**Hydraulic Analogy**
![Current (water) running through the water (wires) causes it to boil, increasing the pressure (voltage), but resisting (impeding) the flow of hydroelectricity (water currents). This is the basis for Ohm's law.](https://imgs.xkcd.com/comics/hydraulic_analogy.png) ⌘ [Read more](https://xkcd.com/2571/)
2022-01-24T05:00:00Z	**Alien Observers**
![ALERT: Human 910-25J-1Q38 has created a Youtube channel. Increase erratic jerkiness of flying by 30% until safely out of range.](https://imgs.xkcd.com/comics/alien_observers.png) ⌘ [Read more](https://xkcd.com/2572/)
2022-01-26T05:00:00Z	**Alien Mission**
![Fine, we can go search the Himalayas for the Yeti ONE more time, but keep a safe altitude over the Pacific and PLEASE watch where you're going. We can't afford another Amelia Earhart incident.](https://imgs.xkcd.com/comics/alien_mission.png) ⌘ [Read more](https://xkcd.com/2573/)
2022-01-28T05:00:00Z	**Autoresponder**
![I ADMIRE HOW YOU SET BOUNDARIES AND I HOPE YOUR COLLEAGUES RESPECT THEM! PLEASE SPARE MY LIFE!](https://imgs.xkcd.com/comics/autoresponder.png) ⌘ [Read more](https://xkcd.com/2574/)
2022-01-31T05:00:00Z	**What If? 2**
![CLARIFICATION: By 9/13, I mean September 13th, not the 9th day of Jancember, the cursed 13th month that exists between December and January in the transdimensional temporal plane.](https://imgs.xkcd.com/comics/what_if_2.png) ⌘ [Read more](https://xkcd.com/2575/)
2022-02-02T05:00:00Z	**Control Group**
![Placeble 228 x/6 ⬜⬜⬜⬜⬜ ⬜⬜⬜⬜⬜ ⬜⬜⬜⬜⬜ ⬜⬜⬜⬜⬜ ⬜⬜⬜⬜⬜ ⬜⬜⬜⬜⬜](https://imgs.xkcd.com/comics/control_group.png) ⌘ [Read more](https://xkcd.com/2576/)
2022-02-04T05:00:00Z	**Sea Chase**
![There are two rules on this ship: Never gaze back into the projection abyss, and never touch the red button labeled DYMAXION.](https://imgs.xkcd.com/comics/sea_chase.png) ⌘ [Read more](https://xkcd.com/2577/)
2022-02-07T05:00:00Z	**Sword Pull**
![Merlin really shouldn't leave his dirt bike lying around.](https://imgs.xkcd.com/comics/sword_pull.png) ⌘ [Read more](https://xkcd.com/2578/)
2022-02-09T05:00:00Z	**Tractor Beam**
![Did you base the saucer shape on pop culture depictions of aliens, or was that stuff based on your ships? Does the rotational symmetry help with ... hey, where are you going?](https://imgs.xkcd.com/comics/tractor_beam.png) ⌘ [Read more](https://xkcd.com/2579/)
2022-02-11T05:00:00Z	**Rest and Fluids**
![Remember not to take it easy. Put a hot washcloth on your forehead, remain standing, and breathe dry air while taking lots of histamines. You need to give your body a chance to get sick again.](https://imgs.xkcd.com/comics/rest_and_fluids.png) ⌘ [Read more](https://xkcd.com/2580/)
2022-02-14T05:00:00Z	**Health Stats**
![You will live on forever in our hearts, pushing a little extra blood toward our left hands now and then to give them a squeeze.](https://imgs.xkcd.com/comics/health_stats.png) ⌘ [Read more](https://xkcd.com/2581/)
2022-02-16T05:00:00Z	**Data Trap**
![It's important to make sure your analysis destroys as much information as it produces.](https://imgs.xkcd.com/comics/data_trap.png) ⌘ [Read more](https://xkcd.com/2582/)
2022-02-18T05:00:00Z	**Chorded Keyboard**
![And even though it all went wrong / I'll stand before the lord of song / with nothing on my tongue but 'I don't understand, I swear I backed up my keyboard config before messing with it'](https://imgs.xkcd.com/comics/chorded_keyboard.png) ⌘ [Read more](https://xkcd.com/2583/)
2022-02-21T05:00:00Z	**Headline Words**
![Roundly-condemned headlinese initiative shuttered indefinitely.](https://imgs.xkcd.com/comics/headline_words.png) ⌘ [Read more](https://xkcd.com/2584/)
2022-02-23T05:00:00Z	**Rounding**
![I've developed a novel propulsion system powered by loss of precision in unit conversion.](https://imgs.xkcd.com/comics/rounding.png) ⌘ [Read more](https://xkcd.com/2585/)
2022-02-25T05:00:00Z	**Greek Letters**
![If you ever see someone using a capital xi in an equation, just observe them quietly to learn as much as you can before they return to their home planet.](https://imgs.xkcd.com/comics/greek_letters.png) ⌘ [Read more](https://xkcd.com/2586/)
2022-02-28T05:00:00Z	**For the Sake of Simplicity**
![For the sake of simplicity, gardeners are assumed to move through Euclidean space--neglecting the distortion from general relativity--unless they are in the vicinity of a Schwarzschild Orchid.](https://imgs.xkcd.com/comics/for_the_sake_of_simplicity.png) ⌘ [Read more](https://xkcd.com/2587/)
2022-03-02T05:00:00Z	**Party Quadrants**
![Single-elimination might provide more drama, but I think we can all agree that a comprehensive numerical scoring system will let us better judge the party's winner.](https://imgs.xkcd.com/comics/party_quadrants.png) ⌘ [Read more](https://xkcd.com/2588/)
2022-03-04T05:00:00Z	**Outlet Denier**
![There are regularly placed bumps on the undersde just the right size to press the rocker switch on the power strip.](https://imgs.xkcd.com/comics/outlet_denier.png) ⌘ [Read more](https://xkcd.com/2589/)
2022-03-07T05:00:00Z	**I Shouldn't Complain**
![Bald-faced hornets are only a 2 on the Schmidt pain index, so I shouldn't complain. The tennis ball ejected from the dryer exhaust vent could have ricocheted off the nest of a much higher-scoring insect before knocking me off the ladder. Really, I'm lucky.](https://imgs.xkcd.com/comics/i_shouldnt_complain.png) ⌘ [Read more](https://xkcd.com/2590/)
2022-03-09T05:00:00Z	**Qua**
![Qua qua qua is the sine qua non of sine qua non qua sine qua non.](https://imgs.xkcd.com/comics/qua.png) ⌘ [Read more](https://xkcd.com/2591/)
2022-03-11T05:00:00Z	**False Dichotomy**
![There are two types of dichotomy: False dichotomies, true dichotomies, and surprise trichotomies.](https://imgs.xkcd.com/comics/false_dichotomy.png) ⌘ [Read more](https://xkcd.com/2592/)
2022-03-14T04:00:00Z	**Deviled Eggs**
![The foil on the toothpick represents the blue flash.](https://imgs.xkcd.com/comics/deviled_eggs.png) ⌘ [Read more](https://xkcd.com/2593/)
2022-03-16T04:00:00Z	**Consensus Time**
![Now, you may argue that the varying hour lengths and feedback effects would cause chaos. To which I say, yeah, and I'm also curious to see how the weekday cycle interacts with it! So, you in?](https://imgs.xkcd.com/comics/consensus_time.png) ⌘ [Read more](https://xkcd.com/2594/)
2022-03-18T04:00:00Z	**Advanced Techniques**
![A blow from Emmy's Cutlass of Variations will transport the dragon to a corresponding symmetric position in the Noetherworld.](https://imgs.xkcd.com/comics/advanced_techniques.png) ⌘ [Read more](https://xkcd.com/2595/)
2022-03-21T04:00:00Z	**Galaxies**
![I know it seems overwhelming, but don't worry; I'm sure most of them have only a few stars, and probably no planets.](https://imgs.xkcd.com/comics/galaxies.png) ⌘ [Read more](https://xkcd.com/2596/)
2022-03-23T04:00:00Z	**Salary Negotiation**
!["We can do 0.33 or 0.34, but our payroll software doesn't allow us to--" "NO DEAL."](https://imgs.xkcd.com/comics/salary_negotiation.png) ⌘ [Read more](https://xkcd.com/2597/)
2022-03-25T04:00:00Z	**Graphic Designers**
![They might make it past that first line of defense. For the second, you'll need some picture frames, a level, and a protractor that can do increments of less than a degree.](https://imgs.xkcd.com/comics/graphic_designers.png) ⌘ [Read more](https://xkcd.com/2598/)
2022-03-28T04:00:00Z	**Spacecraft Debris Odds Ratio**
![You say this daily walk will reduce my risk of death from cardiovascular disease by 30%, but also increase my risk of death by bear attack by 300%? That's a 280% increased! I'm not a sucker; I'm staying inside.](https://imgs.xkcd.com/comics/spacecraft_debris_odds_ratio.png) ⌘ [Read more](https://xkcd.com/2599/)
2022-03-30T04:00:00Z	**Rejected Question Categories**
![You can click to preorder to get a copy of What If? 2 when it comes out 9/13, assuming we all make it past the spider situation(?) on Tuesday(?).](https://imgs.xkcd.com/comics/rejected_question_categories.png) ⌘ [Read more](https://xkcd.com/2600/)
2022-04-01T04:00:00Z	**Instructions**
![Happy little turtles](https://imgs.xkcd.com/comics/instructions.png) ⌘ [Read more](https://xkcd.com/2601/)
2022-04-05T04:00:00Z	**Linguistics Degree**
![You'd think 'linguistics' would go to someone important in the field, but it's actually assigned to a random student in Ohio who barely graduated and then went into automotive marketing.](https://imgs.xkcd.com/comics/linguistics_degree.png) ⌘ [Read more](https://xkcd.com/2602/)
2022-04-06T04:00:00Z	**Childhood Toys**
![The rope keeps breaking, I'm covered in bruises and scrapes, and I've barely reached the end of my driveway, but I don't care--I'm determined to become the first person to commute to work by tetherball.](https://imgs.xkcd.com/comics/childhood_toys.png) ⌘ [Read more](https://xkcd.com/2603/)
2022-04-08T04:00:00Z	**Frankenstein Captcha**
![The distinction between a ship and a boat is a line drawn in water.](https://imgs.xkcd.com/comics/frankenstein_captcha.png) ⌘ [Read more](https://xkcd.com/2604/)
2022-04-11T04:00:00Z	**Taylor Series**
![The Taylor series should have been canceled after the first term.](https://imgs.xkcd.com/comics/taylor_series.png) ⌘ [Read more](https://xkcd.com/2605/)
2022-04-13T04:00:00Z	**Weird Unicode Math Symbols**
![U+2A0B ⨋ Mathematicians need to calm down](https://imgs.xkcd.com/comics/weird_unicode_math_symbols.png) ⌘ [Read more](https://xkcd.com/2606/)
2022-04-15T04:00:00Z	**Geiger Counter**
![At first I didn't get why they were warning me about all those birds sitting on the wire, but then I understood.](https://imgs.xkcd.com/comics/geiger_counter.png) ⌘ [Read more](https://xkcd.com/2607/)
2022-04-18T04:00:00Z	**Family Reunion**
![Grandma says that because of differences in primate and feline lifespans, the cat is actually my 17,000,000th cousin 14,000,000 times removed.](https://imgs.xkcd.com/comics/family_reunion.png) ⌘ [Read more](https://xkcd.com/2608/)
2022-04-20T04:00:00Z	**Entwives**
![No, we actually do have a woman who's basically part of our fellowship. She lives in Rivendell, you wouldn't know her.](https://imgs.xkcd.com/comics/entwives.png) ⌘ [Read more](https://xkcd.com/2609/)
2022-04-22T04:00:00Z	**Assigning Numbers**
![Gödel should do an article on which branches of math have the lowest average theorem number.](https://imgs.xkcd.com/comics/assigning_numbers.png) ⌘ [Read more](https://xkcd.com/2610/)
2022-04-25T04:00:00Z	**Cutest-Sounding Scientific Effects**
![The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.](https://imgs.xkcd.com/comics/cutest_sounding_scientific_effects.png) ⌘ [Read more](https://xkcd.com/2611/)
2022-04-27T04:00:00Z	**Lightsabers**
![A lot of Jedi romances start with this turning into a Lady and the Tramp spaghetti situation.](https://imgs.xkcd.com/comics/lightsabers.png) ⌘ [Read more](https://xkcd.com/2612/)
2022-04-29T04:00:00Z	**Bad Map Projection: Madagascator**
![The projection's north pole is in a small lake on the island of Mahé in the Seychelles, which is off the top of the map and larger than the rest of the Earth's land area combined.](https://imgs.xkcd.com/comics/bad_map_projection_madagascator.png) ⌘ [Read more](https://xkcd.com/2613/)
2022-05-02T04:00:00Z	**2**
![It's like sigma summation notation, except instead of summing the argument over all values of i, you 2 the argument over all values of 2.](https://imgs.xkcd.com/comics/2.png) ⌘ [Read more](https://xkcd.com/2614/)
2022-05-04T04:00:00Z	**Welcome Back**
!['We're shocked by the Notre Dame fire. Click for our tribute to--' [okay] 'Now that we're all staying at home these past few weeks thanks to this new coronavirus, we--' [okay]](https://imgs.xkcd.com/comics/welcome_back.png) ⌘ [Read more](https://xkcd.com/2615/)
2022-05-06T04:00:00Z	**Deep End**
![Hey! No running in the back-arc basin!](https://imgs.xkcd.com/comics/deep_end.png) ⌘ [Read more](https://xkcd.com/2616/)
2022-05-09T04:00:00Z	**Maps**
![OpenStreetMap was always pretty good but is also now *really* good? And Apple Maps's new zoomed-in design in certain cities like NYC and London is just gorgeous. It's cool how there are all these good maps now!](https://imgs.xkcd.com/comics/maps.png) ⌘ [Read more](https://xkcd.com/2617/)
2022-05-11T04:00:00Z	**Selection Bias**
![We carefully sampled the general population and found that most people are familiar with acquiescence bias.](https://imgs.xkcd.com/comics/selection_bias.png) ⌘ [Read more](https://xkcd.com/2618/)
2022-05-13T04:00:00Z	**Crêpe**
![A medicine that makes you put two dots over your letters more often is a diäretic.](https://imgs.xkcd.com/comics/crepe.png) ⌘ [Read more](https://xkcd.com/2619/)
2022-05-16T04:00:00Z	**Health Data**
![Donate now to help us find a cure for causality. No one should have to suffer through events because of other events.](https://imgs.xkcd.com/comics/health_data.png) ⌘ [Read more](https://xkcd.com/2620/)
2022-05-18T04:00:00Z	**Mainly Known For**
![Oh sure, I know Keira Knightly, from the first movie in that series by The Land Before Time producer. You know, the franchise with the guy from Jurassic Park and Ghostwriter, and script work by Billie Lourd's mom?](https://imgs.xkcd.com/comics/mainly_known_for.png) ⌘ [Read more](https://xkcd.com/2621/)
2022-05-20T04:00:00Z	**Angular Diameter Turnaround**
![Thank you to Katie Mack for teaching me about this effect, and to Janelle Shane for describing redshifts as 'like galaxies sinking into a pool of dilute blood,' which is how I'll see them from now on.](https://imgs.xkcd.com/comics/angular_diameter_turnaround.png) ⌘ [Read more](https://xkcd.com/2622/)
2022-05-23T04:00:00Z	**Goofs**
![The film is set in 2018, but when Commander Bremberly chases the hologram through Times Square, there's a billboard for Avengers: Age of Ultron. Depending on the date, that billboard would have been advertising either Infinity War or this movie.](https://imgs.xkcd.com/comics/goofs.png) ⌘ [Read more](https://xkcd.com/2623/)
2022-05-25T04:00:00Z	**Voyager Wires**
![Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.](https://imgs.xkcd.com/comics/voyager_wires.png) ⌘ [Read more](https://xkcd.com/2624/)
2022-05-27T04:00:00Z	**Field Topology**
![The combination croquet set/10-lane pool can also be used for some varieties of foosball and Skee-Ball.](https://imgs.xkcd.com/comics/field_topology.png) ⌘ [Read more](https://xkcd.com/2625/)
2022-05-30T04:00:00Z	**d65536**
![They're robust against quantum attacks because it's hard to make a quantum system that large.](https://imgs.xkcd.com/comics/d65536.png) ⌘ [Read more](https://xkcd.com/2626/)
2022-06-01T04:00:00Z	**Types of Scopes**
![An x-ray gyroscope is used to determine exactly which toppings they included in the pita.](https://imgs.xkcd.com/comics/types_of_scopes.png) ⌘ [Read more](https://xkcd.com/2627/)
2022-06-03T04:00:00Z	**Motion Blur**
![I can't speak for your other subjects, but MY motion was as smooth and natural as the framerate allowed.](https://imgs.xkcd.com/comics/motion_blur.png) ⌘ [Read more](https://xkcd.com/2628/)
2022-06-06T04:00:00Z	**Or Whatever**
![Oh yeah, I didn't even know they renamed it the Willis Tower in 2009, because I know a normal amount about skyscrapers.](https://imgs.xkcd.com/comics/or_whatever.png) ⌘ [Read more](https://xkcd.com/2629/)
2022-06-08T04:00:00Z	**Shuttle Skeleton**
![It's believed to be related to the Stellar Sea Cow.](https://imgs.xkcd.com/comics/shuttle_skeleton.png) ⌘ [Read more](https://xkcd.com/2630/)
2022-06-10T04:00:00Z	**Exercise Progression**
![They said after I got into a routine, I'd enjoy getting progressively stronger and stop whining so much about how hard exercise was. Well, they were half right!](https://imgs.xkcd.com/comics/exercise_progression.png) ⌘ [Read more](https://xkcd.com/2631/)
2022-06-13T04:00:00Z	**Greatest Scientist**
!["Ow! One of the petri dishes I left on the tower railing fell and hit me on the head! Hey, that gives me an idea..."](https://imgs.xkcd.com/comics/greatest_scientist.png) ⌘ [Read more](https://xkcd.com/2632/)
2022-06-15T04:00:00Z	**Astronomer Hotline**
![Employment statistics have to correct for the fact that the Weird Bug Hotline hires on a bunch of extra temporary staff every 17 years.](https://imgs.xkcd.com/comics/astronomer_hotline.png) ⌘ [Read more](https://xkcd.com/2633/)
2022-06-17T04:00:00Z	**Red Line Through HTTPS**
![Some organization has been paying to keep this up and it hasn't been removed from search results. Seems like two votes of confidence to me.](https://imgs.xkcd.com/comics/red_line_through_https.png) ⌘ [Read more](https://xkcd.com/2634/)
2022-06-21T04:00:00Z	**Superintelligent AIs**
![Your scientists were so preoccupied with whether or not they should, they didn't stop to think if they could.](https://imgs.xkcd.com/comics/superintelligent_ais.png) ⌘ [Read more](https://xkcd.com/2635/)
2022-06-22T04:00:00Z	**What If? 2 Countdown**
![If you don't end the 99 Bottles of Beer recursion at N=0 it just becomes The Other Song That Never Ends.](https://imgs.xkcd.com/comics/what_if_2_countdown.png) ⌘ [Read more](https://xkcd.com/2636/)
2022-06-24T04:00:00Z	**Roman Numerals**
![100he100k out th1s 1nno5at4e str1ng en100o501ng 15e been 500e5e50op1ng! 1t's 6rtua100y perfe100t! ...hang on, what's a "virtuacy"?](https://imgs.xkcd.com/comics/roman_numerals.png) ⌘ [Read more](https://xkcd.com/2637/)
2022-06-27T04:00:00Z	**Extended NFPA Hazard Diamond**
![With most labs, the hushed horror stories are about something like dimethylmercury or prions, but occasionally you'll get a weird lab where it's about the soda machine or the drop ceiling.](https://imgs.xkcd.com/comics/extended_nfpa_hazard_diamond.png) ⌘ [Read more](https://xkcd.com/2638/)
2022-06-29T04:00:00Z	**Periodic Table Changes**
![It's nice how the end of the periodic table is flush with the edge these days, so I think we should agree no one should find any new elements after #118 unless they discover a whole row at once.](https://imgs.xkcd.com/comics/periodic_table_changes.png) ⌘ [Read more](https://xkcd.com/2639/)
2022-07-01T04:00:00Z	**The Universe by Scientific Field**
![The math and philosophy people also claim everything, but the astronomers argue that the stuff they study really only comprises a small number of paper surfaces.](https://imgs.xkcd.com/comics/the_universe_by_scientific_field.png) ⌘ [Read more](https://xkcd.com/2640/)
2022-07-04T04:00:00Z	**Mouse Turbines**
![It's sad seeing those videos of turbine blade being torn apart in high winds, but it's the only way they can disperse their seeds.](https://imgs.xkcd.com/comics/mouse_turbines.png) ⌘ [Read more](https://xkcd.com/2641/)
2022-07-06T04:00:00Z	**No One Was Hurt**
![See how the smoke obscures things so you don't see the approaching tornado until the firework streamers start to swirl right before the lightning hits the launcher. Thank God Cousin Ed was filming in slow motion. And, uh, that no one was hurt.](https://imgs.xkcd.com/comics/no_one_was_hurt.png) ⌘ [Read more](https://xkcd.com/2642/)
2022-07-08T04:00:00Z	**Cosmologist Gift**
![These neutrinos were freshly produced by a local source just 8 minutes ago](https://imgs.xkcd.com/comics/cosmologist_gift.png) ⌘ [Read more](https://xkcd.com/2643/)
2022-07-11T04:00:00Z	**fMRI Billboard**
![[other side] If the first word of an instruction you're given starts with the same letter as your crush's name, for that step imagine the experimenter is your crush.](https://imgs.xkcd.com/comics/fmri_billboard.png) ⌘ [Read more](https://xkcd.com/2644/)
2022-07-13T04:00:00Z	**The Best Camera**
![The best camera is the one at L2.](https://imgs.xkcd.com/comics/the_best_camera.png) ⌘ [Read more](https://xkcd.com/2645/)
2022-07-15T04:00:00Z	**Minkowski Space**
![My liege, we were able to follow the ship into Minkowski space, but now they've jumped to Hilbert space and they could honestly be anywhere.](https://imgs.xkcd.com/comics/minkowski_space.png) ⌘ [Read more](https://xkcd.com/2646/)
2022-07-18T04:00:00Z	**Capri Suns**
![[As security is dragging me away] "Come on, at least I didn't make the mistake in the other direction!"](https://imgs.xkcd.com/comics/capri_suns.png) ⌘ [Read more](https://xkcd.com/2647/)
2022-07-20T04:00:00Z	**Chemicals**
![It's hard to believe, but lots of kids these days ONLY know how to buy prepackaged molecules.](https://imgs.xkcd.com/comics/chemicals.png) ⌘ [Read more](https://xkcd.com/2648/)
2022-07-22T04:00:00Z	**Physics Cost-Saving Tips**
![I got banned from the county fair for handing out Helium-2 balloons. Apparently the instant massive plasma explosions violated some local ordinance or something.](https://imgs.xkcd.com/comics/physics_cost_saving_tips.png) ⌘ [Read more](https://xkcd.com/2649/)
2022-07-25T04:00:00Z	**Deepfakes**
![If so great a deductive mind as Arthur Conan Doyle can be fooled by the Cottingley Deepfakes, what chance do we mortals have? Soon our very reality will be dictated by the whims of Frances (9) and Elsie (16).](https://imgs.xkcd.com/comics/deepfakes.png) ⌘ [Read more](https://xkcd.com/2650/)
2022-07-27T04:00:00Z	**Air Gap**
![You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.](https://imgs.xkcd.com/comics/air_gap.png) ⌘ [Read more](https://xkcd.com/2651/)
2022-07-29T04:00:00Z	**Proxy Variable**
![Our work has produced great answers. Now someone just needs to figure out which questions they go with.](https://imgs.xkcd.com/comics/proxy_variable.png) ⌘ [Read more](https://xkcd.com/2652/)
2022-08-01T04:00:00Z	**Omnitaur**
!["My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.](https://imgs.xkcd.com/comics/omnitaur.png) ⌘ [Read more](https://xkcd.com/2653/)
2022-08-03T04:00:00Z	**Chemtrails**
![Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.](https://imgs.xkcd.com/comics/chemtrails.png) ⌘ [Read more](https://xkcd.com/2654/)
2022-08-05T04:00:00Z	**Asking Scientists Questions**
!['Does the substance feel weird to the touch?' is equally likely to get the answers 'Don't be ridiculous, you would never put your hand near a sample. We have safety protocols.' and 'Yeah, and it tastes AWFUL.'](https://imgs.xkcd.com/comics/asking_scientists_questions.png) ⌘ [Read more](https://xkcd.com/2655/)
2022-08-08T04:00:00Z	**Scientific Field Prefixes**
![Massage: Theoretical (10), Quantum (6), High-energy (2), Computational (1), Marine (1), Astro- (None)](https://imgs.xkcd.com/comics/scientific_field_prefixes.png) ⌘ [Read more](https://xkcd.com/2656/)
2022-08-10T04:00:00Z	**Complex Vowels**
![Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.](https://imgs.xkcd.com/comics/complex_vowels.png) ⌘ [Read more](https://xkcd.com/2657/)
2022-08-12T04:00:00Z	**Coffee Cup Holes**
![Theoretical physicist: At the Planck length, uncountably many.](https://imgs.xkcd.com/comics/coffee_cup_holes.png) ⌘ [Read more](https://xkcd.com/2658/)
2022-08-15T04:00:00Z	**Unreliable Connection**
![NEGATIVE REVIEWS MENTION: Unreliable internet. POSITIVE REVIEWS MENTION: Unreliable internet.](https://imgs.xkcd.com/comics/unreliable_connection.png) ⌘ [Read more](https://xkcd.com/2659/)
2022-08-17T04:00:00Z	**Gen Z**
![Curdled milk, of a peculiar kind, made after a Bulgarian recipe and called "yaghurt," is now a Parisian fad and is believed to be a remedy against growing old. A correspondent who has tried it, says he would prefer to die young. (1905, The Elk Falls Journal)](https://imgs.xkcd.com/comics/gen_z.png) ⌘ [Read more](https://xkcd.com/2660/)
2022-08-19T04:00:00Z	**Age Milestone Privileges**
![If you reach 122, you get complete unrevertible editorial control over Jeanne Calment's Wikipedia article.](https://imgs.xkcd.com/comics/age_milestone_privileges.png) ⌘ [Read more](https://xkcd.com/2661/)
2022-08-22T04:00:00Z	**Physics Safety Tip**
![In general, avoid exposure to any temperatures, pressures, particle energies, or states of matter that physicists think are neat.](https://imgs.xkcd.com/comics/physics_safety_tip.png) ⌘ [Read more](https://xkcd.com/2662/)
2022-08-24T04:00:00Z	**Tetherball Configurations**
![Ground-pole-ball-pole can be fun if you shake the first pole to get the second one whipping around dangerously, but the ball at the joint gets torn apart pretty fast.](https://imgs.xkcd.com/comics/tetherball_configurations.png) ⌘ [Read more](https://xkcd.com/2663/)
2022-08-26T04:00:00Z	**Cloud Swirls**
!['Why did you get into fluid dynamics?' 'Well, SOME planet has to have the coolest clouds, odds are it's not ours, and rockets are slow.'](https://imgs.xkcd.com/comics/cloud_swirls.png) ⌘ [Read more](https://xkcd.com/2664/)
2022-08-29T04:00:00Z	**America Songs**
![Juraaaassic Park, Juraaaassic Park, God shed his grace on theeeee](https://imgs.xkcd.com/comics/america_songs.png) ⌘ [Read more](https://xkcd.com/2665/)
2022-08-31T04:00:00Z	**Universe Price Tiers**
![In Universe Pro®™ the laws of physics remain unchanged under time reversal, to maintain backward compatibility.](https://imgs.xkcd.com/comics/universe_price_tiers.png) ⌘ [Read more](https://xkcd.com/2666/)
2022-09-02T04:00:00Z	**First Internet Interaction**
![To that stranger on the KOOL Tree House chat room, I gotta hand it to you: You were, ultimately, not wrong.](https://imgs.xkcd.com/comics/first_internet_interaction.png) ⌘ [Read more](https://xkcd.com/2667/)
2022-09-05T04:00:00Z	**Artemis Quote**
![Another option: "It is an honor to be the first human to set foot on the moon."](https://imgs.xkcd.com/comics/artemis_quote.png) ⌘ [Read more](https://xkcd.com/2668/)
2022-09-07T04:00:00Z	**Things You Should Not Do**
![Now I'm tempted to start telling people that I secretly don't actually know how to do any physics calculations, and so all the answers in What If are based on me actually trying to do the thing and then reporting what happened, but phrased as if it's hypothetical.](https://imgs.xkcd.com/comics/things_you_should_not_do.png) ⌘ [Read more](https://xkcd.com/2669/)
2022-09-09T04:00:00Z	**Interruption**
![It's been extra bad ever since my GPS got stuck on Phoebe Judge mode.](https://imgs.xkcd.com/comics/interruption.png) ⌘ [Read more](https://xkcd.com/2670/)
2022-09-12T04:00:00Z	**Rotation**
![It's okay, we can just feed the one-pixel image into an AI upscaler and recover the original image, or at least one that's just as cool.](https://imgs.xkcd.com/comics/rotation.png) ⌘ [Read more](https://xkcd.com/2671/)
2022-09-13T04:00:00Z	**What If? 2 Flowchart**
![Don't worry, the dogs are all fine. That's actually kind of the problem.](https://imgs.xkcd.com/comics/what_if_2_flowchart.png) ⌘ [Read more](https://xkcd.com/2672/)
2022-09-16T04:00:00Z	**Cursed mRNA Cocktail**
![Serve one each to guests whose last cursed cocktail was more than 2 months ago.](https://imgs.xkcd.com/comics/cursed_mrna_cocktail.png) ⌘ [Read more](https://xkcd.com/2673/)
2022-09-19T04:00:00Z	**Everyday Carry**
![Someday I just know I'm going to encounter a problem that requires 500 flashlights and 700 knives with weird holes in them, and on that day I won't be caught unprepared.](https://imgs.xkcd.com/comics/everyday_carry.png) ⌘ [Read more](https://xkcd.com/2674/)
2022-09-21T04:00:00Z	**Pilot Priority List**
![CELEBRATE: Serve passengers tiered cakes shaped like the airspace class diagram](https://imgs.xkcd.com/comics/pilot_priority_list.png) ⌘ [Read more](https://xkcd.com/2675/)
2022-09-23T04:00:00Z	**Historical Dates**
![Evidence suggests the 1899 transactions occurred as part of a global event centered around a deity associated with the lotus flower.](https://imgs.xkcd.com/comics/historical_dates.png) ⌘ [Read more](https://xkcd.com/2676/)
2022-09-26T04:00:00Z	**Two Key System**
![Our company can be your one-stop shop for decentralization.](https://imgs.xkcd.com/comics/two_key_system.png) ⌘ [Read more](https://xkcd.com/2677/)