Tia Ghose

The length of a second hasn't been updated in 70 years, but ultraprecise atomic optical clocks are on track to change that.

The oldest evidence of tectonic plates are sealed in ancient crystals

The swarm of 85,000 earthquakes that struck Antarctica was the strongest seismic outburst ever recorded there.

Hurricane Ida, an "extremely dangerous" Category 4 hurricane, made landfall near Port Fourchon, Louisiana, at 11:55 a.m. local time on Sunday.

Experts have said that a slight spike in radioactivity above northern Europe likely originated in Russia, but Russian nuclear plants in the area deny any abnormalities.

These strange discoveries will suck you in.

Stephen Hawking's last paper has been touted to provide a way to finally test for the existence of a multiverse, but it's unlikely to do that, several experts said.

Robert Langlands, a professor at the Institute for Advanced Studies at Princeton University, won one of mathematics' most prestigious prizes for a lifetime for groundbreaking work.

Stephen Hawking, one of the brightest minds of modern physics, has died at the age of 76 at his home in Cambridge, England.

The preliminary permit issued by the district's Department of Transportation is still vague on details.

New Year's Day is a time for resolutions and hangovers, but this year, it also provides a chance to see the moon in all its glory.

While most UFO sightings can be attributed to cloud formations, atmospheric phenomena, weather balloons or military planes, a few remain unexplained.

Spy satellite and drone imagery is revealing ancient Silk Road outposts and other lost archeological treasures in the treacherous deserts of Afghanistan.

The Breakthrough Prize in mathematics was awarded to two researchers who showed that polynomial questions with many variables have a finite number of solution types.

Despite decades of research and billions of dollars in investment, no one has a nuclear missile defense system that is remotely reliable, experts say.

Elon Musk has once again sounded the alarm about killer robots, this time in response to a video of a humanoid robot doing a backflip.

The slowdown in Earth's rotation could trigger more earthquakes next year, new research suggests.

Atlas, a new disaster robot can execute amazing human-like acrobatic feats such as backflips and in-air pirouettes.

The amount of carbon dioxide that humans will have released into the atmosphere by 2100 may be enough to trigger a sixth mass extinction, a new study suggests.

Three hurricanes are churning simultaneously in the Atlantic – a fairly rare occurrence that hasn't been since 2010.

Barely a week after Hurricane Harvey slammed the Texas coast, another monster hurricane is brewing out in the Atlantic.

From flowers that closed prematurely to hundreds of thousands of farmed salmon on the loose, the eclipse had a strange impact on nature yesterday.