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

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

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 has problems of its own.

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

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

A majority of 8th-graders and roughly a third of 10th- and 12th-graders do not see great risk in using fentanyl once or twice, a study reports.

A scientist, a jar of pickles and a power strip walk into a room. The punchline involves physics, glowing condiments and a scientific party trick.

Homo floresiensis may have scavenged Komodo dragon leftovers instead of hunting small elephant relatives.

Samples collected at daring heights provide evidence for an untested theory of tree drought adaptation, while countering another.