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Minus 10 degrees fahrenheit. but even here in patagonia's most extreme environment, there are hardy pioneers. this camp is the temporary home of an elite team of glaciologists. you need much more than a ph.d. to work at place like this. >> very little is known about the impact of climate change on the ice field. chile general water director is funding research to find out how much it's melting. the expedition leader is never happier than when he's up here

Here among the peaks of the high andes, great rivers of ice are born. this is the southern patagonian ice field. 220 miles long and an astounding 5,000 feet deep. patagonia's ice fields cover more than 6,500 square miles and are the third largest expanse of fresh water ice on the planet. temperatures can drop below

Up through the highlands, from its foothills to its volcanic plateaus, all the way up to its high ice fields. our journey begins on the grass lands on the patagonia step, at 1,500 feet. here one predator reigns supreme. ♪ >> the puma. this big cat roams all of the americas. you might know it as a cougar, a mountain lion or even a panther. in patagonia, with no bears or wolves to trouble them, pumas are the top predator, and they

Volcanic plateaus, all the way up to its high ice fields. our journey begins on the grasslands of the patagonian step. at 1,500 feet. here, one predator reigns supreme. the puma. this big cat roams all of the americas. you might know it as a cougar, a mountain lion, or even a panther. in patagonia, with no bears or wolves to trouble him, pumas are the top predator. and they know it.

Temperatures can drop below minus 10 degrees farenheit. but even here in patagonia's most extreme environment there are hearty pioneers. this camp is the temporary home of an elite team of glaciologists. you need much more than a ph.d. to work at a place like this. >> very little is known about the impact of climate change on the ice field. chile's general water directorate is funding research