Billions of chestnut trees once dominated American forests, until a mysterious threat brought their reign to an abrupt end.

Scientists have discovered a plastic-eating enzyme with a surprising second ability that raises new questions about bacteria.

A Spanish cliff preserved ancient Neanderthal wood tools, including a mysterious object unlike anything previously found.

Cats, happiness and a common parasite collide in a 93-country study that revealed a pattern researchers did not expect to ...

A machine imagined nearly 300 years ago bears an uncanny resemblance to AI, including a problem that remains familiar today.

A giant fossil turtle found in Peru is revealing new details about the enormous reptiles that once inhabited the Amazon.

Switzerland’s glaciers suffered another devastating year, with new measurements revealing the scale of the ice loss.

Years after North Korea’s last nuclear test, Mt. Mantap is still shaking as scientists trace the activity to faults disturbed ...

Inside a silent Soviet space station, water had frozen and batteries were dead. The rescue would require an unprecedented ...

Restricted access, rare wildlife and a uniquely potent viper have turned Ilha da Queimada Grande into one of Brazil’s most ...

A strange blue mud buried deep beneath the Pacific is alive with extreme microbes, revealing how life can persist where ...

A vast Sargassum bloom is reshaping parts of the Atlantic, driven by nutrient pollution, ocean currents and a buildup now ...