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BBC: April 13, 2016
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Independent: April 11, 2016
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Science Focus - April 11, 2016
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Nature: April 11, 2016
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The Washington Post: April 1, 2016
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Science Daily: December 10, 2015
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Reuters: May 27, 2015
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Reuters: March 4, 2015
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Science Daily: March 8, 2012
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Science Daily: October 9, 2006
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Science Digest: September 1, 2005
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Director: Gordon McLennan | Producer: Anand Ramayya: 2006