Fingerprint Hand Gun.  (starts at 5:45) How on Earth’s Shelley Schlender talks with Boulder teen scientist Kai Kloepfer, who is creating a “Smart Gun” that won him first prize in engineering at the INTEL international science fair and a $50,000 grant from the Smart Tech Challenges Foundation.  Kloepfer’s goal is to prevent accidental shootings of children.  His gun fires only when the user’s fingerprint is authorized.

High Altitude Observatory.  (starts at 11:35) Director Scott McIntosh talks with How on Earth’s Joel Parker about the observatory and its 75th year celebrations.

Hosts: Joel Parker, Kendra Krueger

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