Denise Chow

The U.S. Army is testing an unmanned version of its famous Black Hawk helicopter. The pilotless, 5-ton drone could one day be used to autonomously deliver cargo and supplies to troops.

The first case of a deadly virus that surfaced in Saudi Arabia in 2012 has been reported in the United States, officials at the Centers for Disease Control and Prevention announced today (May 2).

A massive 32,000-ton, stainless steel arch — so large it could conceal the Statue of Liberty — is being constructed to cover what's left of a nuclear reactor in Chernobyl that exploded in 1986.

The first total lunar eclipse of 2014 will occur overnight tonight, marking the start of an eclipse tetrad — four back-to-back total lunar eclipses — that will happen over the next 18 months.

The Malaysian government has reportedly launched an investigation into the actions of civil aviation and military officials in connection with the missing Malaysia Airlines Flight MH370.

Two Swiss pilots who will attempt to fly around the world in a solar-powered plane are planning to give the public a virtual tour of their high-tech ride today (April 10).

A new solar-powered plane that will be used to fly around the world in five consecutive days without using any fuel was unveiled today (April 9) in Switzerland.

A robot that can dig quickly and deeply in mud or wet sand could one day be used to lay underwater cables, dig up and detonate underwater mines, or anchor machines to the seafloor, researchers say.

A new atomic clock unveiled today (April 3) is three times more precise than the one previously used to keep official time in the United States, making it the most accurate timekeeper yet developed.