Northeastern states are engaged in a game of renewable one-upmanship.

Greenhouse gas emissions will spike today as temperatures along the East Coast approach triple digits and grid operators fire up nearly all of their power plants to help Americans beat the heat.

Colorado has big climate goals. But to meet them, one of the state's largest power companies is going to have to stop burning so much coal.

The Department of Energy is looking for information to help energy companies steel themselves against the impacts of severe weather events.

Democratic governors have become increasingly bold about flexing their muscles when it comes to climate change. Tom Wolf, the governor of Pennsylvania, is weighing an executive order to enact a carbon cap-and-trade program. Virginia's Ralph Northam has pursued a regulation that would allow his state to participate in the Regional Greenhouse Gas Initiative, a cap-and-trade system for power plants in the Northeast.