All Stories

Health & Medicine

New study links early smartphone ownership to health risks

The earlier kids get smartphones, the more likely they’ll get too little sleep, gain weight — and possibly develop depression, a new study suggests.

Planets

Listen to the crackle of ‘mini-lightning’ on Mars

Scientists suspected Mars had these zaps but had never detected them — until now. NASA’s Perseverance rover recorded them generated by dusty gusts.

Tech

Scientists Say: Cryogenic

This deep-frozen field of science allows conservation biologists to preserve the DNA of endangered species and more.

Artificial Intelligence

Bots have their own social network, and it’s worrying experts

Security experts warn that Moltbook, which launched last month, is a "nightmare" where people may get their bots to steal others’ identities and money.

Health & Medicine

You need to eat protein — but the right mix really matters

All proteins are not equal, research is showing. So while most Americans get plenty of protein, they might not be eating the most nutritious blend.

Chemistry

Explainer: What is chirality?

Chiral molecules are mirror images of each other. They might not seem all that different — but can have drastically different effects in medicine, materials and more.

Physics

Precise tee placement can improve golf driving, teen finds

A homemade golf-ball-driving machine helped this middle-school engineer improve his own game.

Fossils

Let’s learn about Tyrannosaurus rex

These fearsome predators truly were enormous — with the bone-crushing bite power to match.

Space

Scientists Say: Spacetime

Weaving together the concepts of space and time allows scientists to understand gravity and more.

Health & Medicine

Butt breathing might help people struggling to get enough oxygen

This strange investigation into whether humans can use the gut for breathing has surprisingly heartwarming origins: helping the scientist’s dad.

Animals

Lions have a second roar that scientists have only just discovered

This insight from machine-learning analyses of recordings of calls in the wild might help detect where lions are declining.

Climate

As winters warm, athletes must cope with harder snow and tricky ice

Ice arenas and artificial snow now dominate the winter Olympics. Athletes there — and everywhere — may need to adjust how they train and perform.