6,745 results
- Animals
Crouching Scientist, Hidden Dragonfly
Although dragonflies are among the most familiar of insects, science is just beginning to unravel their complex life stories.
- Anthropology
Stone Age Footwork: Ancient human prints turn up down under
An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.
- Earth
Buried Treasures
Geologists have long understood the chemical processes that sculpt many cave formations, but they've only recently come up with a physical model that explains some of their shapes.
- Planetary Science
Icy world found inside asteroid
New observations of Ceres, the largest known asteroid, hint that frozen water may account for as much as 25 percent of its interior.
- Astronomy
Astronomy Gets Polarized
Studies using polarized light, an endeavor once considered astronomy's stepchild, are now elucidating the shape of supernovas as well as providing new details about the early universe.
- Animals
That’s One Weird Tooth
The narwhal's distinctive spiral tusk has structures that could make it phenomenally sensitive, raising new questions about its functions.
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30 Hours with Team Slime Mold
A bunch of biologists volunteer for a mad weekend of biodiversity surveying to see what's been overlooked right outside Washington, D.C.
- Chemistry
How hot was it?
Scientists have created heat-sensing polymers that indicate exposure to high temperatures by changing color under ultraviolet light.
- Ecosystems
Caviar Caveats
Caviar may become harder to find as a new trade ban goes into effect that's aimed at giving the most prized sturgeon a much-needed break from overfishing for their roe.
- Health & Medicine
Blood, Iron, and Gray Hair
Recent findings show that anemia is exceedingly common in elderly people and link the condition to severe health problems, including accelerated physical and mental decline and a shorter life span.
- Tech
Sensor measures mass of one DNA molecule
A new biosensor that can detect the mass of a single DNA molecule could lead to faster and more accurate screening for HIV infection, cancer, and other diseases.
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Concentrated Guidance: Attention training gives kids a cognitive push
A brief course on how to pay attention boosts children's scores on either intelligence or attention tests, depending on their age.
