Federal authorities have restricted helicopter flights near Ronald Reagan Washington National Airport. The move comes days ...

A series of orders from the Trump administration have the potential to disrupt the delivery of life-saving medications to HIV ...

Winters are getting warmer and shorter as the climate changes. That's helping rat populations grow in several U.S. cities.

Responders are working to recover the victims of Wednesday night's midair collision over Washington, D.C. It could be the ...

Costco is raising pay for most workers as Friday night deadline looms on a new contract with its unionized employees.

A federal grand jury has indicted a Navajo man, his father and a business partner on charges that they were running illegal ...

The National Science Foundation's funding freeze, and wider confusion about the status and future of science funding, is ...

Authorities are combing the Potomac River for a second day in search of victims and more clues behind the deadliest U.S. air ...

President Trump renewed his threat to impose 25% tariffs on imports from Mexico and Canada as early as this weekend. The move ...

For more than 100 years, scientists have known about a shrew living in the mountains around Yosemite National Park. California designated it a "species of special concern," but nobody had seen it.

In little more than a week, the Trump administration has fired people who prosecuted the president and reassigned other career officials.

Myanmar's military deposed the elected government led by Nobel laureate Aung San Suu Kyi. She remains in jail and the country is mired in a brutal civil war.