On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard.  On the fateful launch day, there were several engineers who expressed serious concerns surrounding the launch on one of the coldest days in Florida history. 
We are joined by author Adam Higginbotham to talk about his new book, "Challenger:  A True Story of Heroism and Disaster on the Edge of Space", which chronicles the Space Shuttle Challenger disaster and the missteps that were made along the way.   

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