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Change will lead the $20 billion bureaucracy charged with studying the man-made effects of climate change. one of the nasa programs is called operation ice bridge, which tracks how climate change is affecting the earth's all-important polar regions. msnbc's jacob soboroff went to greenland to see how nasa collects this crucial information. >> reporter: the arctic sea ice has been changing dramatically in the last several decades. looking at the data in a scientific sense, i've seen changes in the thickness, in the exstent of the ice. and all that's pointing to thinning ice, shrinking ice cover...

Oklahoma republican, jim bridenstein to lead nasa. bridenstein who has no background in science just squeaked by the senate on a peter line vote, and now a republican congressman who says he's not sure humans are the primary drivers of climate change will lead the $20 billion bureaucracy charged with studying the man-made effects of climate change. one of the nasa programs is called operation ice bridge, which tracks how climate change is affecting the earth's all-important polar regions. msnbc's jacob soboroff went to greenland to see how nasa collects this crucial information. >> reporter: t...