News
- Space
Gamma-ray bling!
A recent, unusually luminous gamma-ray burst is shedding new light on these stellar explosions and the visible light they produce.
- Health & Medicine
Vacillating stem cells
Unsuspected, ever-changing variation among stem cells in bone marrow helps determine the development path the cells will follow during differentiation.
- Humans
Butting out together
Cigarette smokers who know one another tend to kick the habit all at once, highlighting the importance of social forces in smoking-cessation treatment.
- Chemistry
Slippery when dry
Surfaces that mimic the back of an African beetle can collect water from fog.
- Health & Medicine
Trust again
The ability to trust others even after violations of trust is regulated by the hormone oxytocin.
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- Space
Supernova Outbreak
Thanks to a lucky break and an overactive galaxy, astronomers report the earliest detection yet of a normal supernova—the explosive death of a massive star.
- Health & Medicine
Nonstick toxicity
By mimicking the action of estrogen, a widely used nonstick chemical promotes cancer development in animals.
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- Life
These colors don’t run
A chameleon employs different color-changing defenses depending on its predator.
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- Life
Reviving extinct DNA
For the first time, scientists have resurrected a piece of DNA from an extinct animal — the Tasmanian tiger. The researchers engineered mice with a piece of the long-gone marsupial's DNA that turns on a collagen gene in cartilage-producing cells.
