Humans and our ancestors have been exposed to lead for 2 million years, but the toxic metal may have actually helped our species to develop language — giving us a key advantage over our Neanderthal cousins, scientists claim.

Halving how much edible food is thrown away, swapping beef for pork or chicken and having one meatless day a week could slash the carbon "hoofprint" of U.S. cities by up to 51%, a new study finds.

Two ESA spacecraft, Hera and Europa Clipper, are poised to fly through the long tail of interstellar comet 3I/ATLAS, a new paper finds.

When does daylight saving time end in 2025? Here's a look at when the time changes this year, and why we change our clocks in the first place.

Mayan language experts have decoded the name of a previously unknown Maya queen on a stone inscription discovered last year.