Uncategorized
- Chemistry
Nanoparticles in foods raise safety questions
As scientists cook up ways to improve palatability and even make foods healthier, some are considering the potential health risks of tiny additives.
- Animals
How to drink like a bat
Some bats stick out their tongues and throbs carry nectar to their mouths.
- Paleontology
Dimetrodon’s diet redetermined
The reptilelike Dimetrodon dined mainly on amphibians and sharks, not big herbivores as scientists once believed.
- Anthropology
Sleep time in hunter-gatherer groups on low end of scale
Hunter-gatherer communities in Africa and South America have similar sleeping patterns as people living in postindustrial societies, researchers find.
- Plants
Early cyanobacteria fossils dug up in 1965
In 1965, early photosynthetic plant fossils were discovered. The date of earliest oxygen-producing life forms has since been pushed much earlier.
- Neuroscience
Adolescent brains open to change
Adolescent brains are still changing, a malleability that renders them particularly sensitive to the outside world.
- Humans
U.S. is growing more genetically diverse
Young Americans are more genetically diverse than previous generations, a new DNA analysis reveals.
- Genetics
Microbes may reveal colon cancer mutations
Certain microbial mixes are associated with particular DNA mutations in colon cancer, a new study suggests.
- Anthropology
Long before going to Europe, humans ventured east to Asia
Cave finds indicate modern humans reached southern China long before entering Europe.
- Health & Medicine
Cancer drug’s effectiveness overinflated in animal studies
Claims about the cancer drug sunitinib are overblown because of poorly designed studies and negative results that were never published, a new analysis suggests.
- Health & Medicine
Elephants’ cancer-protection secret may be in the genes
An extra dose of cancer-fighting genes may be the secret to elephants’ long life spans.
- Environment
Air pollutants enter body through skin
Although scientists have largely viewed skin as an unimportant portal to blood for toxic air pollutants, new human data show that skin can surpass lungs as a route of entry.
