Jetpacks and Certain Death, GOOGLE HANGOUT WITH HANK GREEN AND RANDALL MUNROE OF XKCD

Jetpacks and Certain Death, GOOGLE HANGOUT WITH HANK GREEN AND RANDALL MUNROE OF XKCD:

What If? Available Now: http://www.amazon.com/What-If-Scientific-Hypothetical-Questions/dp/0544272994 For years, xkcd has been delighting the internet with s…