News
- Astronomy
‘Space beads’ push back origins of iron working
Ancient Egyptians used advanced techniques to make beads out of 'metal from the sky.'
- Astronomy
To determine stars’ physical traits, Kepler sees the light
Measuring stellar brightness can yield useful estimates of stars' size and evolutionary stage, and help in the hunt for planets.
- Animals
For sheep horns, bigger is not better
Trade-offs between studliness and survival keep less endowed sheep in the mix.
- Life
Bacteria can cause pain on their own
Microbes caused discomfort in mice by activating nerves, not the immune system.
- Animals
Birds know road speed limits
Crows, house sparrows and other species judge when to flee the asphalt by average traffic rates rather than an oncoming car's speed.
- Psychology
Blood marker may predict suicide
People who killed themselves had higher levels of a gene involved in cell death.
- Health & Medicine
Power of sugar may come from the mind
Only people who believe exertion zaps willpower get a boost from glucose.
- Life
Years or decades later, flu exposure still prompts immunity
New forms of influenza viruses can spur production of antibodies to past pandemics in people who lived through them.
- Materials Science
Toylike blocks make lightweight, strong structures
Bucking trend toward reducing numbers of parts, MIT engineers suggest building planes from thousands of identical pieces.
- Health & Medicine
Clues emerge to explain allergic asthma
Tests in mice reveal that allergens can trigger inflammation by cleaving a clotting protein.
- Health & Medicine
Gut-brain communication failure may spur overeating
Restoring a depleted molecule in obese mice repaired their abnormal response to food.
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