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There's excitement on the beaches of Southern California.

World leaders are painting quite different views of the future of artificial intelligence at the United Nations, with colorful phrases such as killer robots and super intelligence.

Democratic attorneys general from California and New York are suing the Trump administration over its plans to buy back offshore wind leases as it seeks to discourage expansion of wind energy in favor of fossil fuels.

After a summer spent packing away sockeye salmon, Alaska’s heftiest brown bears are ready to throw their weight around.

The National Hurricane Center says the tropical cyclone named Polo is now a hurricane in the Pacific Ocean.

World and business leaders this week will grapple with the urgent costs of climate change.

Officials say two helicopter pilots have been killed in a crash while battling a wildfire at Yosemite National Park in California.

If you've accumulated too many reusable bags, donate the excess.

Tropical Storm Polo has formed off southwestern Mexico.

Italian health authorities are seeing evidence that rising temperatures and longer warm seasons are helping mosquitoes spread West Nile virus across a wider area, during more months of the year.

An adult humpback whale has been spotted in California's largest river.

Nepal is holding a day of mourning to remember those killed in the Aug. 26 floods.

A federal judge in Rhode Island has ruled that the Trump administration illegally terminated a $7 billion Solar for All program intended to make solar power accessible to more than 900,000 lower-income Americans.

For years, scientists have explored ways to remove carbon from the atmosphere, including through direct air capture, changes to ocean chemistry so seawater can absorb more carbon and reforestation.

In the days after Hurricane Lowell, officials asked tourists to stay away from Kauai to let island residents recover and responders clean up.

Killing endangered animals while logging a forest or building a dam would not be considered illegal unless the animals were specifically targeted, under a new interpretation of the Endangered Species Act.

Human remains found in the Grand Canyon this week have been identified as Timothy Allen Smith, the last person missing after the deadly flash flooding in late August.

Countries are embracing clean power and taking steps to use less energy because of the war against Iran.