River to River
2:25 pm
Fri December 27, 2013

Space and Dinosaurs

A listen back to two of the most riveting science conversation of the year  First, astrophysicist and science advocate Neil deGrasse Tyson chats with host Ben Kieffer on capturing asteroids and the future of human space exploration.  Then later, University of Iowa geologist Chris Brochu discusses recent research on the death of the dinosaurs.

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