Uncategorized
- Health & Medicine
Internet use may harm teen health
Using the Internet more than two hours a day puts teens at risk of high blood pressure, a new study finds.
- Brain
Explainer: What is anxiety?
Anxiety is the stress linked to worries about an upcoming event — one that may not even happen. But anxiety can affect the body every bit as much as does the stress provoked by staring down a hungry lion.
- Health & Medicine
If you’re awake, you’re probably eating
The idea that we eat three meals a day is a myth. People eat nearly constantly, and that may not be good for our health.
- Animals
This prehistoric meat eater preferred surf to turf
For years, paleontologists thought the fierce, sharp-toothed Dimetrodon made a meal of land-based plant eaters. Not anymore. New fossils suggest aquatic animals were its meals of choice.
- Chemistry
These bubbles treat wounds
New research shows bubble-powered drugs can travel upstream, against the flow of blood, to seal wounds shut.
- Earth
Scientists Say: Jet Stream
You might hear about the jet stream on a weather report, but what is it? We explain.
- Animals
News Brief: Bees prefer caffeine-spiked nectar
Bees usually alert friends to sources of especially sweet nectar. But a new study finds caffeine is every bit as appealing to them as the sugar is. And that could compromise the quality of their honey.
- Agriculture
The dirt on soil
More than just dirt, soils teem with microbes essential for growing crops. Soils also help prevent floods and even play a role in climate change.
- Space
Pollution may give ‘first’ stars a youthful look
The oldest stars should be made of only light elements. But these suns may have sucked up heavier elements, giving them a more youthful appearance, a new study finds.
- Animals
Humans are ‘superpredators’
A new study compares the hunting habits of wild animals and humans. People, it turns out, are unlike any other predator on Earth.
- Brain
Study challenges safety for teens of two depression drugs
Scientists reanalyze data on the safety of common drugs to treat depression and find that they don’t seem to help teens. Worse, the drugs may harm them.
- Animals
Wolves beat dogs at problem-solving test
When treats are at stake, wolves outperformed dogs at opening a closed container. The dog’s relationship with humans may explain why.
