C.E.O.s, policymakers and billionaires at the World Economic Forum’s conference have long pledged to fight climate change. Has it done any good?

His day-one declarations aim to cripple clean energy, boost major polluters, and undermine actions meant to safeguard ...

Trump’s executive orders about energy went beyond the pro–fossil fuel tone of his first term with aggressive measures to curtail wind and solar power generation. Language throughout the spate of ...

Without federal support, California may be the first domino to fall, as a polarized nation moves to take the economic reality of climate change into its own hands.