Life
- Fossils
Mini tyrannosaur fills big evolutionary gap
A newfound dinosaur named “omen of doom” fills a gap in tyrannosaur evolution. It helps to narrow when the group sized up.
- Brain
What part of us knows right from wrong?
Our conscience may have evolved from our need to cooperate. Scientists are learning where the brain’s moral centers are, and how they make us human.
- Health & Medicine
Fevers can have some cool benefits
Fever boosts the immune system by zipping germ-busting cells to the site of an infection, new data show.
- Animals
Scientists Say: Okapi
Okapis are African mammals that look a bit like horses and a bit like zebras. But they’re most closely related to giraffes.
- Health & Medicine
What’s behind frequent strep throat? Consult the tonsils
A faulty immune response might explain why some kids get strep throat often, new data show. Another problem: The diagnosis may a case of mistaken identity.
- Climate
Disappearing sea ice could disrupt Arctic’s food web
When sea ice goes missing in the Arctic, every part of the ecosystem feels the effects.
- Animals
Bones show ancient marine reptile was a big baby
A new study of a rare baby plesiosaur reveals that these marine reptiles were huge at birth, then continued to grow speedily.
- Animals
Bee parasite is more werewolf than vampire
Inventing fake bee larvae prompts scientists to rethink how a mite — ominously named Varroa destructor — does its damage.
- Animals
Ocean acidification may ground swimming skates
Fish might seem immune to acidic waters, but check their skeletons. They can be vulnerable and eventually alter how fish behave.
- Animals
Is ocean acidification knocking the scents out of salmon?
In more acidic water, salmon don’t seem to recognize the smell of danger. Will their populations take a nosedive as carbon-dioxide levels rise?
- Animals
Animal graveyard found in deeply buried Antarctic lake
Mud from Antarctica’s Lake Mercer surprised scientists with what appeared to be the carcasses of tiny animals. A neighboring lake had only microbes.
- Animals
A Bolivian frog species returns from the dead
A Bolivian frog was missing in the wild for 10 years. Scientists feared chytrid fungus had driven the frog extinct. Then they found 5 survivors.
