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2013-04-19
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4,629,915 views
2013-04-16
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2013-04-05
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307,591 views
2013-04-02
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396,904 views
2013-03-25
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174,362 views
2013-03-21
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127,907 views
2013-03-20
Dear Subscribers...
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2013-03-19
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1,642,280 views
2013-03-18
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2,099,335 views
2013-03-13
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4,512,905 views
2013-03-12
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3,419,251 views
2013-03-07
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1,995,392 views
2013-03-05
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1,066,051 views
2013-02-25
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119,652 views
2013-02-19
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643,448 views
2013-02-14
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460,716 views
2013-02-12
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73,488 views
2013-02-11
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778,684 views
2013-02-07
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240,602 views
2013-02-05
In on a secret? That's dramatic irony - Christopher Warner
1,805,510 views
2013-01-29
How to defeat a dragon with math - Garth Sundem
4,687,346 views
2013-01-15
You are your microbes - Jessica Green and Karen Guillemin
2,006,799 views
2013-01-07
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1,047,085 views
2012-12-18
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701,480 views
2012-12-17
What makes a hero? - Matthew Winkler
9,358,377 views
2012-12-04
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1,391,433 views
2012-11-27
A 3-minute guide to the Bill of Rights - Belinda Stutzman
2,254,397 views
2012-10-30
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12,452,915 views
2012-10-29
Gerrymandering: How drawing jagged lines can impact an election - Christina Greer
1,134,295 views
2012-10-25
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285,999 views
2012-10-24
The Making of the American Constitution - Judy Walton
1,008,153 views
2012-10-23
The carbon cycle - Nathaniel Manning
709,387 views
2012-10-02
What's invisible? More than you think - John Lloyd
3,024,557 views
2012-09-26
The art of the metaphor - Jane Hirshfield
1,628,400 views
2012-09-24
Newton's 3 Laws, with a bicycle - Joshua Manley
2,326,363 views
2012-09-19
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2,609,003 views
2012-09-11
How fiction can change reality - Jessica Wise
821,580 views
2012-08-23
Logarithms, Explained - Steve Kelly
2,050,729 views
2012-08-20
The history of keeping time - Karen Mensing
252,957 views
2012-08-16
Music as a language - Victor Wooten
1,402,726 views
2012-08-13
The survival of the sea turtle
2,062,835 views
2012-07-23
The key to media's hidden codes - Ben Beaton
286,419 views
2012-05-29
How Life Begins in the Deep Ocean
352,128 views
2012-05-14
Insults by Shakespeare
2,341,163 views
2012-05-04
Sex Determination: More Complicated Than You Thought
4,533,525 views
2012-04-23
Just How Small is an Atom?
7,687,204 views
2012-04-16
Why do Americans vote on Tuesdays?
430,158 views
2012-04-10