Rivers rose and flooding worsened across the U.S. South and Midwest, threatening communities already waterlogged and badly damaged by days of heavy rain and wind that killed at least 18 people.

More than two decades after spotting a mysterious, gelatinous, bioluminescent creature swimming in the deep sea, California researchers this week announced that it was a new species of sea slug.

As the largest wildfire in California this year approached the small town of Cohasset, Ron Ward was prepared with a sprinkler system he had just finished installing around his ranch after losing his homeowners insurance.

A new study shows the return of sea otters and their voracious appetites has helped rescue a section of California marshland.

Scott Dixon snagged his third win of the season with a strategic run in Sunday’s IndyCar season finale at Laguna Seca.

The disconnect is jarring: Across the United States, employers who are desperate to fill jobs have posted a record-high number of job openings.

Migrants have been bused to Monterrey, Nuevo Leon, under the Trump administration's “Remain in Mexico” program, a partnership with the Mexican government.