xkcd's What If?

xkcd's What If?

58 videos

View on YouTube →

Recent Videos

Sort by:

0:01:49
What if we built a billion-story building?
Tue, 17 Feb 2026 18:30:26 GMT
xkcd's What If?
0:04:38
What if you made a jetpack using rifles?
Tue, 10 Feb 2026 19:41:12 GMT
xkcd's What If?
0:01:42
What if you teleported to the Sun?
Tue, 03 Feb 2026 19:29:15 GMT
xkcd's What If?
0:01:26
What if you printed all of Wikipedia?
Tue, 27 Jan 2026 19:40:28 GMT
xkcd's What If?
0:03:16
How long would you survive with no DNA?
Tue, 20 Jan 2026 17:36:44 GMT
xkcd's What If?
0:01:47
What if we teleported the oceans to Mars?
Tue, 23 Dec 2025 18:00:08 GMT
xkcd's What If?
0:01:50
What if you drained the oceans?
Tue, 16 Dec 2025 19:26:55 GMT
xkcd's What If?
0:02:48
Can you power your computer by typing?
Tue, 02 Dec 2025 17:00:02 GMT
xkcd's What If?
0:02:13
What if everyone on Earth was in the same place and jumped at the same time?
Tue, 25 Nov 2025 18:00:23 GMT
xkcd's What If?
0:01:37
Could you swim in a spent nuclear fuel pool?
Tue, 18 Nov 2025 19:24:53 GMT
xkcd's What If?