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.

Researchers found that the urban frogs call faster, more frequently and add more embellishments — a series of staccato "chucks" on the end of the initial whine — compared with those in the forest. Those fancy urban love songs are three times more likely to attract the ladies, as scientists learned by playing back recordings of both city and forest frog calls to an audience of female frogs in a laboratory.

Conservation groups are alarmed by the Trump administration's proposal to rename some radioactive waste left from the production of nuclear weapons to make it cheaper and easier to achieve permanent disposal. The U.S. Department of Energy is considering a change in its legal definition of high-level radioactive waste, which is stored at places like the Hanford.

Officials began to clean up a massive oil spill Friday that dumped nearly 800,000 gallons of oil and water into a California canyon, making it larger — if less devastating — than the state's last two major oil spills. The newly revealed spill has been flowing off and on since May and has again stopped, Chevron spokeswoman Veronica Flores-Paniagua said. She and California officials said the spill is not near any waterway and has not significantly affected wildlife. The last flow was Tuesday.

In a dramatic rollback of environmental oversight, President Donald Trump took action Thursday to clear the way and speed up development of a wide range of commercial projects by cutting back federal review of their impact on the environment.

Poland Spring announced Monday a plan to use 100% recycled plastic for all its noncarbonated water containers, a move that comes amid growing concern about plastic pollution. The Maine-based company said the effort kicks off this month with 1-liter bottles. By 2022, the company plans to use 100% recycled plastic for bottles in all of its still water lines. A niche product called Poland Spring Origin also uses 100% recycled plastic bottles.

"Thousands of scientists around the world joined together last month to label climate change the 'emergency' that it is. But one of the main points they make — linking control of women’s reproduction to environmental goals — is problematic," says columnist Kelsey Holt. "Focusing on what women in poor nations with the highest birth rates can do to curb climate change distracts from holding wealthy countries and corporations accountable for their disproportionate harm to the planet and imperils the right to reproductive autonomy.

At ski races across the United States, competitors are starting to abandon a type of wax many count on for speed amid concerns it contains potentially hazardous chemicals that threaten human health and could reach streams and other critical groundwater sources. The International Ski Federation, the governing body for international skiing, announced plans to ban the use of fluorinated waxes in all disciplines next season.

Flying into the uninhabited Northwestern Hawaiian Islands, Midway Atoll appears out of the vast blue Pacific as a tiny oasis of coral-fringed land with pristine white sand beaches that are teeming with life. But on the ground, there's a different scene: plastic, pollution and death. Here's a look at the island.

Unspoiled rivers in the Balkans are facing new dangers from small hydropower plants that have sprouted up across the region in recent years, environmental experts warned Thursday. In a declaration issued after a meeting in the Bosnian capital Sarajevo, they urged Balkan governments to halt any further construction of hydro dams. "We want everybody to see that it is bad, and it is wrong and that we are devastating our natural beauties," said Irma Popovic Dujmovic, from World Wide Fund for Nature Adria group.