"U.S. Energy Secretary Rick Perry pushed for opening Nevada's Yucca Mountain nuclear waste site in a meeting with the state's governor on Monday, but the local leader said he remains staunchly opposed to the project."

"California’s clean-air agency voted on Friday to push ahead with stricter emissions standards for cars and trucks, setting up a potential legal battle with the Trump administration over the state’s plan to reduce planet-warming gases."

"A federal court yesterday rejected an ambitious lawsuit from environmentalists who say federal regulators are biased toward approving natural gas pipelines."

"RICHMOND, Va. — Arsenic is illegally flowing out of one of the sites where Virginia's biggest utility stores coal ash, polluting surrounding waters, a federal judge ruled Thursday."

"With the state's Republican governor saying he will sign it, a bill to prevent the drilling practice nears a vote in the Senate."

"Exxon Mobil can’t locate a year’s worth of emails from an alias account used by former CEO Rex Tillerson, now the secretary of state."

"The cost to implement tough fuel-efficiency standards for cars imposed by the Obama administration for the first half of the next decade could be up to 40 percent lower than previously estimated using existing conventional technologies, according to a report from a nonprofit group released on Wednesday."

"The U.S. State Department has signed and issued a presidential permit to construct the Keystone XL pipeline. That reverses former President Barack Obama's 2015 decision to reject the controversial pipeline."