Osu speed dating
It is a massive challenge, in some of the most hostile regions on Earth. Over the millennia, the expansion and contraction of ice across the continents has fundamentally altered the planet, gouging out lakes and valleys and pushing man around the earth.
The waxing and waning of the ice sheets have been implicated in who lives where and what they do.
His passion is to document it and help scientists understand these monumental changes.This NOVA-National Geographic Television special investigates the latest evidence of a radically warming planet.