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2015-04-21
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2015-04-20
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2015-04-13
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2015-04-09
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679,486 views
2015-04-07
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2015-04-06
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2015-04-02
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2,779,835 views
2015-03-31
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1,564,777 views
2015-03-30
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2,084,383 views
2015-03-26
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1,276,058 views
2015-03-24
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2015-03-23
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494,342 views
2015-03-19
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7,244,742 views
2015-03-17
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2,940,041 views
2015-03-16
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4,232,756 views
2015-03-13
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477,151 views
2015-03-10
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4,667,308 views
2015-03-09
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9,068,133 views
2015-03-05
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1,079,040 views
2015-03-02
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2,031,484 views
2015-02-26
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1,011,019 views
2015-02-24
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1,082,547 views
2015-02-19
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858,472 views
2015-02-17
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4,330,188 views
2015-02-12
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5,008,945 views
2015-02-10
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2,343,355 views
2015-02-09
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573,726 views
2015-02-05
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10,360,153 views
2015-02-03
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2,261,013 views
2015-02-02
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855,646 views
2015-01-29
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1,762,982 views
2015-01-27
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1,783,876 views
2015-01-26
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212,575 views
2015-01-22
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903,597 views
2015-01-20
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336,494 views
2015-01-15
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366,021 views
2015-01-13
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3,136,562 views
2015-01-12
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1,442,287 views
2015-01-08
Einstein's miracle year - Larry Lagerstrom
2,681,099 views
2015-01-06
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6,674,341 views
2015-01-05
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469,477 views
2014-12-23
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11,425,357 views
2014-12-22
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8,935,197 views
2014-12-18
The truth about bats - Amy Wray
1,820,664 views
2014-12-16
The pharaoh that wouldn't be forgotten - Kate Green
4,617,272 views
2014-12-15
At what moment are you dead? - Randall Hayes
4,940,724 views
2014-12-11