News
- Life
Undereducated immune cells get aggressive with HIV
Scientists discover a mechanism that makes some people resistant to infection with the AIDS virus.
- Space
New Hubble pictures suggest Milky Way fell together
A preliminary analysis appears to strike a blow against the prevailing theory of galaxy formation.
- Health & Medicine
U.S. childhood obesity rate continues to rise
Only a few states buck the trend toward greater weight gain in kids age 10 to 17, a new survey shows.
- Earth
Gulf oil spill a slow-motion hurricane
The accident’s timing could determine how badly it damages coastal marshes.
- Health & Medicine
Epigenetic changes show up in people with PTSD
Study finds alterations in genes tied to immune system and brain development, but whether they cause the disorder remains unclear.
- Physics
Making clouds with lasers
Inspired by a classic particle physics experiment, researchers get water droplets to condense by shooting a light beam skyward.
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- Physics
Reverse engineering a quantum compass
Physicists propose a method that could explain how birds’ magnetic-sensing organs work.
- Animals
Aphids make their own bright colors
The insects’ ancestors adapted fungal DNA for manufacturing vital compounds.
- Space
Measuring the weakest of forces
Precise measurements could be used to map tiny fluctuations in the surface properties of materials.
- Space
Mediterranean microfossils offer hope for finding life on Mars
A discovery in sulfate minerals on Earth suggests the possibility of similar signs of life on the Red Planet.
- Life
DNA comparison of identical twins finds no silver bullet for MS
The first study of its kind suggests an unknown environmental cause for multiple sclerosis, but future research could still yield a genetic trigger.
