MSNBC's Chris Hayes shadows Staten Island's Republican Congressman - and climate change skeptic - Michael Grimm in the wake of Superstorm Sandy, questioning what he might have learned about climate change in the process. Conservationist M. Sanjayan travels to the far ends of the earth - including Christmas Island - to interview some of the world's top climate scientists as they collect key data unlocking the future of our planet's changing climate.
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