Alone on a science expedition in the Himalayas, John All falls 70 feet down into an icy crevasse.  Miraculously landing on an ice block wedged in the V shaped fissure, his shoulder dislocated, ribs broken and bleeding internally, Hall is freezing to death.  In this episode, Dr. John All shares stories of his expeditions and adventures undertaken in the name of science.  Confronting Maoist revolutionaries, descending into deep caverns and climbing into the highest mountains,  John All searches for answers to climatic changes in our environment.  A rare combination of research scientist and accomplished mountaineer, John embodies the classic traits of all good explorers.For more information about Dr. All, visit his website at JohnAll.com and at climberscience.org.