One Big Way Obama Can't Outrun Congress on Climate Change

Big nations and private-sector titans arrived in Paris vowing to open their wallets for green energy technology. But can the U.S. make good on its promise?

President Obama arrives in Dillingham, Alaska, on Sept. 2 as part of a three-day trip to Alaska that included using its landscape as an urgent call to action on climate change.
AP Photo/Andrew Harnik