Clips of a three-year-old Lego clock video that I'd not seen before just resurfaced, and it's making the rounds across social ...

Here's what to know about Groundhog Day, why some believe Phil is 140 years old, and when the famed groundhog will make his ...

Time moves differently in space. Near black holes, gravity slows clocks and stretches seconds. This explainer reveals how time bends and affects astronauts and Earth.

Time is almost up on the way we track each second of the day, with optical atomic clocks set to redefine the way the world ...

A science-oriented advocacy group moved its “Doomsday Clock” to 85 seconds to midnight, saying the Earth is closer than ever to destruction.

Catastrophic risks are increasing, cooperation is declining, and swift action is needed from global leaders to correct course.

A Japanese research team has discovered a new compound that can advance the body's internal clock—offering hope for faster ...

Wars, climate change, disruptive technologies and the rise of autocracy over the past year prompted scientists to set the clock at 85 seconds to midnight.

It's not because of runaway robots. It's because we've lost a "shared reality." ...

Humanity continues to court species-threatening disaster through nuclear brinkmanship, a failure to address climate change, and a hasty rollout of artificial intelligence (AI), according to the ...

Familiar risks to human existence such as nuclear weapons and climate change were cited by the scientists, along with new ...

Midnight represents the moment at which people will have made Earth uninhabitable.