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618,707 views
2013-02-14
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447,602 views
2013-02-12
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743,621 views
2013-02-07
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234,504 views
2013-02-05
In on a secret? That's dramatic irony - Christopher Warner
1,759,737 views
2013-01-29
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1,658,357 views
2013-01-17
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1,049,385 views
2013-01-14
Phenology and nature's shifting rhythms - Regina Brinker
98,513 views
2013-01-10
Activation energy: Kickstarting chemical reactions - Vance Kite
236,754 views
2013-01-09
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1,485,480 views
2013-01-08
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125,520 views
2013-01-03
What is color? - Colm Kelleher
1,022,724 views
2012-12-18
Situational irony: The opposite of what you think - Christopher Warner
2,549,759 views
2012-12-13
Radioactivity: Expect the unexpected - Steve Weatherall
934,127 views
2012-12-10
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2,265,251 views
2012-12-05
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9,208,669 views
2012-12-04
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1,293,374 views
2012-11-15
Dark matter: How does it explain a star's speed? - Don Lincoln
101,396 views
2012-11-12
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424,178 views
2012-11-08
A 3-minute guide to the Bill of Rights - Belinda Stutzman
2,177,988 views
2012-10-30
The city of walls: Constantinople - Lars Brownworth
1,333,749 views
2012-10-18
The ABC's of gas: Avogadro, Boyle, Charles - Brian Bennett
210,098 views
2012-10-09
The story behind your glasses - Eva Timothy
131,961 views
2012-10-08
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405,347 views
2012-10-04
The twisting tale of DNA - Judith Hauck
506,372 views
2012-10-03
The carbon cycle - Nathaniel Manning
651,607 views
2012-10-02
The art of the metaphor - Jane Hirshfield
1,585,820 views
2012-09-24
Newton's 3 Laws, with a bicycle - Joshua Manley
2,150,555 views
2012-09-19
A clever way to estimate enormous numbers - Michael Mitchell
1,032,795 views
2012-09-12
An introduction to mathematical theorems - Scott Kennedy
499,513 views
2012-09-10
How taking a bath led to Archimedes' principle - Mark Salata
1,662,852 views
2012-09-06
Greeting the world in peace - Jackie Jenkins
147,184 views
2012-09-04
Logarithms, Explained - Steve Kelly
1,906,674 views
2012-08-20
The history of keeping time - Karen Mensing
245,553 views
2012-08-16
Music as a language - Victor Wooten
1,386,649 views
2012-08-13
The survival of the sea turtle
2,042,304 views
2012-07-23
One is one ... or is it?
1,574,312 views
2012-05-21
Insults by Shakespeare
2,306,182 views
2012-05-04
Exponential growth: How folding paper can get you to the Moon
6,308,332 views
2012-04-19
Just How Small is an Atom?
7,626,858 views
2012-04-16
Why do Americans vote on Tuesdays?
427,449 views
2012-04-10
The Real Origin of the Franchise - Sir Harold Evans
218,112 views
2012-03-26
Symbiosis: A surprising tale of species cooperation - David Gonzales
366,066 views
2012-03-14
Deep ocean mysteries and wonders - David Gallo
1,145,907 views
2012-03-12
The Power of Simple Words - Terin Izil
550,078 views
2012-03-12
Questions No One Knows the Answers to
1,176,507 views
2012-03-12
Why Can't We See Evidence of Alien Life?
3,419,016 views
2012-03-12
How many universes are there? - Chris Anderson
1,928,958 views
2012-03-12