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2014-04-08
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2014-03-25
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2014-03-24
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2014-03-20
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978,313 views
2014-03-18
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2014-03-17
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2014-03-13
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2014-03-10
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2014-03-06
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2014-03-04
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2014-03-03
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257,635 views
2014-02-27
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2014-02-26
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499,735 views
2014-02-25
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3,079,395 views
2014-02-20
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2,115,596 views
2014-02-18
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2014-02-13
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2014-02-11
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1,058,164 views
2014-02-10
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2014-02-06
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2014-02-04
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864,010 views
2014-02-03
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4,190,663 views
2014-01-30
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224,017 views
2014-01-29
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700,984 views
2014-01-28
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1,916,380 views
2014-01-27
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1,061,250 views
2014-01-23
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3,127,253 views
2014-01-21
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24,707,812 views
2014-01-16
Start a TED-Ed Club today!
171,109 views
2014-01-14
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1,568,356 views
2014-01-13
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7,704,819 views
2014-01-09
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16,797,424 views
2014-01-07
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953,870 views
2014-01-06
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3,114,028 views
2014-01-02
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1,682,396 views
2013-12-19
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524,923 views
2013-12-17
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445,832 views
2013-12-16
The death of the universe
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2013-12-12
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127,645 views
2013-12-11
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347,612 views
2013-12-10
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1,501,420 views
2013-12-09
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2013-12-05