In an exploration of extreme medical science, NOVA ascends to the top of Denali to try to solve the mystery of high altitude deaths on one of the most dangerous mountains on Earth. Deadly Ascent chronicles daring mountain rescues, emergency medical evacuations, and cutting-edge science experiments as a team of researchers, doctors, and mountaineering experts employing the latest NASA technology investigate the lethal disease attacking climbers all over the world. DVD features include: printable materials for educators, access to the NOVA web-site, and scene selection. .