World-class filmmaker, adventurer and mountaineer David Breashears is the Executive Director of GlacierWorks. GlacierWorks’ mission is to raise public awareness about the effects of climate change in the Greater Himalaya and to encourage a better understanding of its consequences through photographic expeditions to many of the world’s highest mountains.

He has worked on such feature films as Seven Years in Tibet and Cliffhanger, as well as the award-winning documentary Red Flag over Tibet. In 1983 he transmitted the first live pictures from the summit of Mount Everest and in 1985 became the first American to twice reach its summit. He is the recipient of four Emmy awards for achievement in cinematography. In 1996 he codirected, photographed, and coproduced the acclaimed IMAX large-format film Everest and contributed his still photos from that climb to the bestselling book Everest: Mountain Without Mercy. In 1997 he coproduced and photographed "Everest: The Death Zone" for the PBS science series NOVA, marking his fourth ascent of the world's highest mountain.