News
- Health & Medicine
HIV infects 1 in 100 in New York
A change in how New York City officials identify and track cases of HIV infection has yielded the clearest picture yet of how deeply rooted that city's epidemic has become.
- Health & Medicine
Primate virus found in zoo workers
Viruses related to HIV can be found in the blood of some zoo staff and other people who work with primates, although the infections don't appear to be harmful.
- Archaeology
How agriculture ground to a start
A major advance in agriculture occurred around 11,000 years ago, when western Asians began to walk through patches of wild barley and wheat and scoop handfuls of ripened grains off the ground, a report suggests.
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Blocked gene gives mice super smell
Deactivating a single gene can produce mice with an abnormally sharp sense of smell.
- Astronomy
Finding the star that was
Sifting through archival images, astronomers have identified the star whose explosive demise was recorded by telescopes last year.
- Chemistry
Radical molecule could produce plastic magnets
A team of chemists has synthesized an unusual organic molecule that could lead to cheaper and lighter magnets.
- Physics
Nuclear pudding—to go
Moving at nearly the speed of light, atomic nuclei hurtling through a huge particle collider may become mostly dense, flattened puddings of nuclear particles known as gluons.
- Health & Medicine
Putting the brakes on toxic shock
Scientists have discovered the cascade of molecular events that underpins many cases of toxic shock syndrome.
- Physics
New supergas debuts
A cloud of ultracold potassium atoms, manipulated by means of a magnetic field, has coalesced into a new super form of matter called a fermionic condensate.
- Health & Medicine
Some T cells may be a fetus’ best friend
While pregnant, mice overproduce a kind of T cell that reins in other immune cells that might target the fetus.
- Planetary Science
A view of Mars, European style
Although the Mars lander Beagle 2 is presumed dead, its mother craft, the European Space Agency's Mars Express, has transmitted its first data from a polar orbit about the Red Planet.
- Tech
The rat in the hat
A compact positron-emission tomography (PET) brain scanner may make possible studies of awake rats that link brain functions and behaviors.
