Humans
- Health & Medicine
Scientists Say: Ectoparasite
Many people think of parasites as organisms that live inside their hosts. But some of them can be found on the outside instead.
- Fossils
Ancient jaw suggests humans left Africa earlier than thought
A fossil jaw found in a cave in Israel is at least 177,000 years old. The scientists who found it think it shows humans left Africa much earlier than thought.
By Bruce Bower - Space
En route to Mars, astronauts may face big health risks
Going into space brings the thrill of a new frontier — and risks that scientists are racing to understand, from radiation to isolation.
- Health & Medicine
Yuck! Bedbug poop leaves lingering health risks
Chemical residues left by bedbugs can persist, even when the pests have been eradicated. This may explain lingering allergic symptoms in cleaned up homes, a new study concludes.
- Health & Medicine
Scientists Say: CT scan
Short for computerized tomography, this technique lets scientists and doctors see insides in detail.
- Tech
Human cells form the basis of this artificial eye
Real or fake — you be the judge. Human cells were used to create this test bed for studying both the eye and eye-disease therapies.
- Materials Science
Hairy nanoparticles put viruses in a deadly embrace
Current drugs can’t stop viruses for good. But newly developed hairy nanoparticles just might. They surround and put pressure on the viruses, which ultimately destroys them.
By Ilima Loomis - Health & Medicine
Why many Olympic athletes have early birthdays
When kids start out in sports, coaches tend to pick the biggest as the best. Here’s what scientists are trying to do about it.
- Health & Medicine
Scientists Say: Triclosan
This chemical is known for its bacteria-killing skills. But its use can also promote the development of dangerous, antibiotic-resistant bacteria.
- Health & Medicine
Athletes’ head injuries can provoke surprisingly long-lasting harm
Even as symptoms of an athletic head injury fade, the brain may remain impaired, new data show. The harm may last months — perhaps even a lifetime.
- Health & Medicine
Explainer: What is a concussion?
A concussion is a severe type of head injury that can damage a brain for weeks to years — perhaps even a lifetime.
- Brain
Unlike adults, teens don’t perform better when the stakes are high
Adults tend to do better on tasks that have bigger rewards. Not teens. This difference might have to do with the rewiring of the brain during adolescence, new data suggest.