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Director James Cameron on efforts to fight climate change
The filmmaker, explorer and activist talks with Chris Hayes about contending with climate deniers and building a bottom-up movement to reduce emissions.
Climate on MSBNC
Andrea Mitchell talks with Gov. Jerry Brown at Climate Conference05:42
Gov. Jerry Brown: Trump 'sabotaging the world in many respects'06:33
Trump admin reportedly making it easier to release methane into air03:59
Kerry slams Trump over fact-free policymaking08:24
Fight to combat climate change spans back decades03:17
WI agency bans mention of climate change06:32