President Donald Trump exceeded his authority when he reversed bans on offshore drilling in vast parts of the Arctic Ocean and dozens of canyons in the Atlantic Ocean, a U.S. judge said in a ruling that restored the Obama-era restrictions. U.S. District Court Judge Sharon Gleason in a decision late Friday threw out Trump's executive order that overturned the bans that comprised a key part of Obama's environmental legacy.

President Joe Biden said Wednesday he plans to review the Trump administration's downsizing of two sprawling national monuments in the American Southwest, including one on lands considered sacred to Native Americans who joined environmental groups in suing when the boundaries were redrawn in 2017. The new Democratic president also plans to ask the Department of the Interior to reassess a rule change that allowed commercial fishing at a marine conservation area off the New England coast. The move was heralded by fishing groups and decried by environmentalists.

Arizona is prepared to lose about one-fifth of the water the state gets from the Colorado River in what could be the first federally declared shortage in the river that supplies millions of people in the U.S. West and Mexico, state officials said Thursday. Arizona stands to lose more than any other state in the Colorado River basin that also takes in parts of Wyoming, New Mexico, Utah, Colorado, Nevada and California. That's because Arizona agreed long ago to be the first in line for cuts in exchange for federal funding for a canal system to deliver the water to Arizona's major metropolitan areas.