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Astronomers Find Planetary System
Investigators report the first evidence that a star similar to the sun
has a system of planets circling it.
Inca mummies emerge from deep freeze
Investigators found the mummified bodies of three children, apparently
sacrificed 500 years ago in an Inca ritual, in burials at the top of
a South American volcano.
Blood test may screen for ovarian cancer
A sensitive screening technique indicates that ovarian cancer typically
originates 1.9 years before symptoms appear.
Nature fouls Mexico City's clean-air effort
Pollution from a nearby volcano is hindering Mexico City's bid to clear
Pearl-like bacteria are largest
Residing in ocean sediment off the coast of Namibia, the newly discovered
microbe Thiomargarita namibiensis is more than 100 times larger
than the previous record holder.
Digging bait worms reduces birds' food
Commercial bloodworm harvesting in Canada's Bay of Fundy destroys other
creatures that a huge population of migrating sandpipers needs for food.
Neural teamwork may compensate
People automatically compensate for age-related declines by recruiting
brain areas that wouldn't otherwise participate in a given task.
Arthritis care: Beyond tea and sympathy
Green tea and tart cherries each contain antioxidants that may be useful
in controlling inflammation from injury or diseases such as arthritis.
An instrument-laden satellite will survey Earth as never before
After many delays, NASA plans to launch the Terra satellite this summer
to study Earth's climate.
Can This Swamp Be Saved?
Bold Everglades-protection strategies may revive the river of grass
The most ambitious ecological restoration project in history is aimed
at undoing the past century's damage to the sensitive Everglades ecosystem.
Blocking light to get a sharper image
Using a novel technique that divides the world's largest visible-light
telescope into 36 light detectors, astronomers have observed a curious
spiral pattern of dust around a bright, relatively nearby star.
Galaxies at even greater distances
Astronomers report the most distant galaxy measured so far and have
evidence of two other galaxies that could be even more distant.
Genetic variation helps ward off AIDS
Diversity in several immune genes helps slow down the development of
Misplaced DNA generates problems
Introducing DNA into a cell's cytoplasm triggers changes that can induce
the immune system to destroy normal tissues.
Chinese supplement lowers cholesterol
Bad attitude may be bad for the heart
In two studies, the controversial diet supplement Cholestin appeared
to reduce cholesterol levels.
The more hostility people show, the more likely they are to have calcium
deposits in their heart arteries, which can lead to high blood pressure
and heart attacks.