Episode Details

Space Shield for Satellites (starts 1:00)   An invisible radio wave pollution makes a “space shield” that protects orbiting satellites from Van Allen Belt radiation.  Dan Baker, head of CU-Boulder’s Laboratory for Atmospheric and Space Physics (LASP) explains how his team figured out the man-made source of the mysterious space shield.

Virtual Colonoscopy Option Improves Cancer Screening Rates (starts 6:32)  Colon cancer kills 50,000 Americans each year.  Death rates would go down if more people did preventative screenings.  But one out of three people balk at the traditional colonoscopy.  According to a new study in the journal, Radiology, when insurance pays for either a regular OR a virtual colonoscopy, 48% of the people who avoid screenings agree to get tested.  Lead author, University of Madison’s  Dr. Maureen Smith, explains.

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