Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as ...

Terrestrial planets experience landslides in spades, and so do some moons, asteroids and comets. But — until now — they’ve ...

Proposed federal rules would rely on political appointees to decide how a lot of U.S. science gets done. History shows the ...

It’s not easy living the high life. Take it from the Andean leaf-eared mouse, Earth’s highest-dwelling mammal. To tolerate ...

The HER Salt Lake Contraceptive Initiative’s approach, which centered the user and made refills easy, meant all types of ...

Two studies of Neandertal remains suggest their newborns were about the same size as those of modern humans but developed ...

Marine cloud brightening could cool part of the Pacific and weaken extreme El Niños, simulations suggest. But the approach ...

There’s never been a good method to check for violations of the Outer Space Treaty’s prohibition of nuclear weapons in space.

The gold standard of scientific review, peer review by researchers’ colleagues, is in crisis. AI might offer a solution but ...

The ambitious expedition aims to fill data gaps about the glacier-sea boundary to predict when the world might tip into a ...

A whole-genome analysis of Beefalo, a hybrid bison-cattle breed, suggests very few individuals have any bison DNA at all, a ...