When you’re in a submarine, the last thing you want is a broken window. But at 6 miles down, if there was a real problem you wouldn’t have time to panic -- you’d be dead too fast. Oceanographer Don Walsh tells us how he stayed calm under pressure.
Listen now on our website: http://tiny.cc/kov8bw or take hour two with you on iTunes: http://tiny.cc/j0v8bw.
