July 31, 2019: Bicycle Accidents Prompt Road Safety Questions; Colorado’s Brush With Mars

Did John Hickenlooper have his breakout moment in night one of the Democratic presidential debates? Then, the dynamics of making Colorado roads safe for all modes of transportation after 4 bicyclist deaths this month. Also, what the Mariner missions revealed about Mars 50 years ago. Plus, Colorado's Cold War Horse. And, understanding reinsurance.