Federal authorities have restricted helicopter flights near Ronald Reagan Washington National Airport. The move comes days after a deadly collision between a passenger jet and a military helicopter.

A documentary deconstructs the true crime genre, an obsessive worms his way into a pop star's entourage, and more standouts ...

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

Rwandan-backed M23 rebels say they are now in control of the key eastern Congolese city of Goma. Their fighters continue to ...

The Chinese chatbot took the world by storm and rattled stock markets. But lost in all the attention was a focus on how the ...

The airspace above Reagan National Airport, where a commercial plane collided with an Army helicopter this week, has become increasingly congested with air traffic, including helicopters.

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 deadliest crash to occur in U.S. airspace in at least 15 years.

If confirmed, Trump’s nominee for U.N. ambassador would vacate a safe Republican House seat in the North Country.

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

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

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