Endurance life

When the worst disaster in the history of Mount Everest climbs occurred, Ken Kamler was the only doctor on the mountain. At TEDMED, he shares the incredible story of the climbers' battle against extreme conditions and uses brain imaging technology to map the medical miracle of one man who survived roughly 36 hours buried in the snow. About Ken Kamler Ken Kamler has served as doctor on some of the world’s most daring expeditions, but also performs delicate microsurgery when at home in New York. Ken Kamler: Medical miracle on Everest Link

Joel Levine: Why we need to go back to Mars? At TEDxNASA, planetary scientist Joel Levine shows some intriguing and puzzling new discoveries about Mars: craters full of ice, traces of ancient oceans, and compelling hints at the presence, sometime in the past, of life. He makes the case for going back to Mars to find out more. Joel Levine studies the atmospheres of Earth and Mars, looking at their origin, evolution, structure and chemistry and climate change. He's the principal investigator of the proposed ARES Mars Airplane Mission. Link