Science & Society
- Science & Society
Human ancestors threw spears
Who threw first? Scientists had long believed that ancient people who lived 80,000 years ago were the first to throw spears with stone tips. But the discovery of 279,000-year-old stone spear tips in Ethiopia pushes that date back, and suggests prehuman species hunted with spears too.
- Science & Society
Bigger groups make better tools
As the size of a population grows, so too does its ability to quickly create clever new tools. Lab experiments suggest that connections between people give rise to the new creations.
- Science & Society
Many teens try alternatives to cigarettes
Teen use of cigarettes has dropped a bit in recent years. But many kids have been turning to other tobacco and tobacco-like products. And which they choose can differ sharply by gender and ethnic group.
- Science & Society
Explainer: Inspirations — from Tom Swift to tomatoes
Childhood interests may lead to a career imagining how the future could play out
- Science & Society
Explainer: Some schools already teach future studies
Good preparation for working in this field may require more than a firm grounding in science or engineering.
- Brain
‘Study drugs’ can be dangerous
The misuse of these ADHD medicines not only constitutes cheating, but they can become addictive and can mess with your head.
- Earth
Hacking the planet
The big backup plan: Scientists reluctantly consider altering Earth’s climate to head off the catastrophic effects of global warming.
- Health & Medicine
Explainer: Where and when did HIV begin?
The virus that causes AIDS may have evolved in monkeys or apes more than a century ago.
- Humans
Ancient jewelry from space
Scientists have found beads made out of metal mined from meteorites.
-
-
- Archaeology
The return of a king
The 15th century’s Richard III has returned — or at least, his bones have.
