05:31 Engineering Why don't perpetual motion machines ever work? Lesson duration 05:31 Manage Library 16,618,019 Views
08:07 Technology How do nuclear power plants work? Lesson duration 08:07 Manage Library 3,169,066 Views
04:08 Earth and Space Science How small are we in the scale of the universe? Lesson duration 04:08 Manage Library 1,110,253 Views
05:06 Earth and Space Science 3 Planets That Shouldn't Exist Lesson duration 05:06 Manage Library 1,039,760 Views
04:47 Physical Science Is there a limit to technological progress? Lesson duration 04:47 Manage Library 761,029 Views
04:45 Science & Technology Why doesn’t anything stick to Teflon? Lesson duration 04:45 Manage Library 3,096,237 Views
04:46 Science & Technology Is there a reproducibility crisis in science? Lesson duration 04:46 Manage Library 443,736 Views
02:57 Physical Science What's the ultimate campfire fuel? Lesson duration 02:57 Manage Library 273,987 Views
06:25 Earth and Space Science Carl Sagan on the Existence of Extraterrestrials Lesson duration 06:25 Manage Library 653,212 Views
05:41 Life Sciences How Does it Grow? Hydroponic Spinach Lesson duration 05:41 Manage Library 811,073 Views
07:13 Earth and Space Science What if everyone jumped at once? Lesson duration 07:13 Manage Library 40,084,100 Views
07:05 Social Studies Dr. Sally Ride on Dumb Questions Lesson duration 07:05 Manage Library 114,048 Views
06:17 Earth and Space Science Three Ways to Destroy the Universe Lesson duration 06:17 Manage Library 27,541,943 Views
03:05 Physical Science Einstein's Theory of General Relativity Lesson duration 03:05 Manage Library 916,273 Views
04:24 Physical Science How do we separate the seemingly inseparable? Lesson duration 04:24 Manage Library 757,617 Views
11:44 Design, Engineering & Technology The World's Roundest Object (and Why it Exists) Lesson duration 11:44 Manage Library 38,153,113 Views