Humans
- 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.
- Brain
The upside of cheating
Many people assume that cheaters and thieves will secretly feel shame or guilt. A new study challenges that. It finds that people who cheat without causing anyone much harm actually enjoy a little buzz afterward.
- Brain
Age-old fears perk up baby’s ears
Kids start paying attention to scary sounds when only a few months old.
- Humans
Ancient jewelry from space
Scientists have found beads made out of metal mined from meteorites.
- Health & Medicine
Meet the new meat
Scientists made a hamburger without harming animals; but it cost as much as a house.
- Environment
Unconventional spill
An accidental spill of extra-heavy crude oil points to some unusual challenges in safely getting this petroleum to market.
- Health & Medicine
Camels linked to mystery disease
A mysterious and deadly virus has sickened 94 people — killing 46 — in parts of the Middle East, Europe and northern Africa. A new study finds that camels (the one-humped type) may have introduced the new disease to people. The germ responsible is a virus that lives in people’s lungs, throats and noses. Scientists recently named the disease it causes Middle East respiratory syndrome, or MERS.
- Animals
Explainer: Animals’ role in human disease
Wildlife, livestock and pets are the source of most germs that can sicken people
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- Brain
Nature resets body’s clock
After a week in the wild, people went to bed — and got up — earlier.
- Health & Medicine
Explainer: The teenage body clock
Around puberty, a change in the body clock of adolescents and teens makes it hard for them to fall asleep as early as they used to.
- Tech
Sniffing for cancer
New surgical tool offers surgeons speedier diagnosis of tissues that are cancerous.
