Uncategorized
- Animals
DNA trail leads to new spot for dog domestication
A new study suggests that dogs were first domesticated in Central Asia.
- Life
Genetic tweaks manipulate DNA’s loops
Scientists have changed the loops and curls of DNA as it packs into a nucleus.
- Earth
4.1-billion-year-old crystal may hold earliest signs of life
New evidence suggests that life on Earth arose before 4.1 billion years ago, 300 million years earlier than previous estimates.
- Animals
Slow, cold reptiles may breathe like energetic birds
Finding birdlike air patterns in lungs of crocodilians and in more distantly related lizards raises the possibility that one-way airflow evolved far earlier than birds themselves did.
- Chemistry
Zippy videos teach chemistry behind everyday life
The American Chemical Society breaks down complex reactions of everyday life in zippy online video clips.
- Neuroscience
Signs of Huntington’s show up in the brain in childhood
Hints of Huntington’s disease show up in the brain long before symptoms do.
- Animals
Marine biologist chronicles a lifelong love of fishing
In A Naturalist Goes Fishing, a marine biologist takes readers on a round-the-world fishing expedition
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- Paleontology
New evidence weakens case against climate in woolly mammoths’ death
Hunters responsible for woolly mammoths’ extinction, suggests a chemical analysis of juveniles’ tusks.
- 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.
