You don't need a thermometer or a rain gauge to notice climate change -- and you don't need to be a scientist to see it

A fight between fish and fisherman has shifted to one between rainbow trout and a parasite that invaded Colorado rivers

On the Galápagos Islands, some of the world's most unusual species are in a race against time

In 1988, NASA's top scientist and other doomsayers were right; James Hansen told Congress and the world that global warming wasn't approaching -- it had already arrived

Since 1992, Antarctica has lost 3 trillion tons of ice – enough water to cover Texas to a depth of nearly 13 feet, scientists calculated

At Monday's meeting of the National Space Council, the president called for the creation of a sixth branch of the U.S. military in space

Internet users expect brands -- not just platforms -- to take an active role in fixing social media

The New York Times' David Sanger is out with a new book, "The Perfect Weapon: War, Sabotage, and Fear in the Cyber Age"

Media mogul joining forces with tech giant in move to challenge Netflix and Hulu's dominance of online entertainment

Indictment alleges employees received stolen trade secrets after leaving Jawbone and knew they weren't supposed to have them

Thursday's departure comes as the social network behemoth has faced some of the biggest scandals in its history

Robert and Barney Swan made history as the first explorers to trek to the South Pole using only renewable energy – and they did it to send a message to the rest of us

The "battle-royale" game, which has quickly attracted a massive global audience, is the talk of this year's E3 show

The World Health Organization has confirmed it's decision on whether or not compulsively playing video games now qualifies as a mental disorder

Two NASA astronauts floated outside the space station Thursday for a six-and-a-half-hour excursion

Some of the trees in Yosemite's Mariposa Grove have been growing for close to 2,000 years -- some of the oldest living things on Earth

USB Restricted Mode will close down access to data through an iPhone's Lightning port if the device hasn't been unlocked in the past hour

NASA's Opportunity rover has dropped out of contact with Earth in the midst of a massive dust storm on Mars

Hawaii volcano eruption leads to explosions when waves crash into lava

High Court unanimously rules man can sue for search results that could suggest he's linked to "criminal underworld"

Amid production snags, electric car maker will lay off more than 3,000 workers in push to make money

"Things are bad but we're at a state where we can definitely make a change," said Samantha Mackiewicz, director of World Oceans Day​