- To the Best of Our Knowledge
March 18, 2012

- The Telegraph
March 15, 2012

- KCRW
March 13, 2012

- Talk of the Nation, NPR
December 22, 2011

- CultureLab, New Scientist
October 3, 2011

- Point of Inquiry
March 14, 2011

- SPACE.com
November 25, 2009

- USA Today
March 18, 2007

- Scientific American
January 25, 2001