News
- 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.
- Tech
I, computer
Bacteria that can "flip pancakes" with their DNA are the first microbes engineered to be living computers.
- Health & Medicine
Itchy and scratchy
People with a close relative who has had shingles face a heightened risk of getting the skin disease, and should probably be first in line to get the vaccine.
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- Physics
Catching the cell in action
A light microscope with high resolution may enable scientists to view the 3-D structures within living cells.
- Life
Sepsis buster
The Ashwell receptor, a sugar-binding protein on liver cells, helps fight sepsis by clearing blood-clotting factors. The discovery clears up years of mystery surrounding the receptor’s function.
- Earth
Eddies in the deep Earth
The flow of molten material in our planet's outer core is the prime source of Earth's magnetic field. Localized blips in the magnetic field suggest this flow can fluctuate rapidly over large areas.
