International shipping and aviation emit as much as entire wealthy nations, but they’re not bound by the COP21 deal.
Plus: Tom Steyer on Bernie Sanders’ new climate plan and how global warming will impact the 2016 election.
Watch Climate Desk’s explainer video.
Low oil prices are squeezing production of one of the world’s dirtiest fossil fuels.
Facing a tough re-election bid, Ayotte stakes out a moderate position on power plants.