The Human Crash Test Dummy, Colonel John Stapp

This week, Elna picks Knoxville's brain on one of his heroes, Colonel John Stapp — the flight surgeon, biophysicist, and human performance scientist who once hit 639 miles-per-hour on a rocket sled and somehow lived to talk about it.

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.