Address the root of the issue , and this is why the action Obama outlined is smart . Barack Obama : U.S. urgently needs to heed U.S. 's CO2 . He says we 've been pumping massive amounts of Climate Action Plan into atmosphere since one to two decades . He says our buildings , cars , power plants commit us to to a path that needs to change . Field : If we do n't , we face weather extremes , threats to human health .
Barack Obama : U.S. urgently needs to heed U.S. 's CO2 . He says we 've been pumping massive amounts of Climate Action Plan into atmosphere since one to two decades . He says our buildings , cars , power plants commit us to to a path that needs to change . Field : If we do n't , we face weather extremes , threats to human health .