Colorado has a blueprint for closing its coal facilities. Critics say the plan could drive up customers’ bills.

The resulting conflict is playing out in courtrooms, statehouses and regulatory agencies across the country. It’s grounded in constitutional questions of federal preemption, the commerce clause and ...

Under the new German chancellor, personal relations between the leaders are warmer, but a series of intractable divisions ...

It’s been nearly six months since the Fast-track Approvals system opened for business, and updated statistics show the ...

The agency proposes to overturn  the 2009 “endangerment finding,” which underpins nationwide greenhouse gas emission limits ...

E verything is bigger in Texas, including its pollution, according to clear air experts. A proposed approval plan from the ...

According to two people familiar with the draft, it would eliminate the bedrock scientific finding that greenhouse-gas ...