Social psychologists in the US found that a third of people surveyed feel the world will end in their lifetimes. That's not only depressing; it also affects people's sense of agency when faced by war or climate change.

From smartphone maps to precision weapons, satellite navigation underpins modern life and war. Global navigation satellite systems have become indispensable, and that's made them vulnerable to disruption and attack.

How long does it take for the last drop of milk or oil to drip out of the bottle? US scientists have probed this everyday conundrum.

Countries are racing to build new reactors. But we've barely figured out how to clean up the old ones — and the bill is potentially staggering.

Stressful people in your life are linked to faster biological aging, a US study finds. Forced proximity — especially with family — appears to worsen the effect.

Many young men embrace deeply conservative gender roles, a new international study finds. Is social media stoking the return of traditionalism?

People who have lived with HIV long-term can need up to a dozen pills every day to suppress the virus. Results from a new drug trial raise hope of changing that.

A series of fueling issues has delayed the much-anticipated launch of NASA's Artemis II moon mission, the first to carry astronauts since the Apollo moon landings. The Space Launch System rocket is grounded until April.

Wildfires destroy lives and livelihoods. But survivors and firefighters also suffer long-term harm to their health. A growing body of research suggests particulate matter (PM2.5) in wildfire smoke is a major culprit.

Ecuador released 158 juveniles in the first phase of an ambitious rewilding effort at the World Heritage Site.