Feature
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MathTake a Chance
Researchers are helping to turn the art of generating randomness into a precise science.
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DNA Bar Codes
Scientists are using a small piece of DNA as a molecular bar code, a unique identifier to separate organisms into species.
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PaleontologyFlightless Feathered Friends
New finds of fossil penguins, as well as analyses of the characteristics and DNA of living penguins, are shedding light on the evolution of these flightless birds.
By Sid Perkins -
Health & MedicineAsthma Counterattack
After several experimental attempts, researchers finally have verified that fighting allergens in the household can reduce symptoms of asthma.
By Ben Harder -
EcosystemsOne-Celled Socialites
A wave of research on the social lives of bacteria offers insights into the evolution of cooperation and may lead to medical breakthroughs that neutralize virulent bacterial strains.
By Bruce Bower -
Planetary ScienceA Titan of a Mission
On Jan. 14, a space probe will plunge through the thick atmosphere of Saturn's moon Titan, looking for insights into the origins of life on Earth.
By Ron Cowen -
AgricultureFrozen Assets
A U.S. gene bank has begun deep-freezing semen and other livestock 'seed' for possible future use in research or breeding.
By Janet Raloff -
Health & MedicineAssault on Autism
A shift in scientific thinking about what causes autism is prompting a closer look at potential environmental factors.
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Materials ScienceMetal Makeover
Metallic glasses with extraordinary strength and corrosion resistance have been known for decades, but only recently have researchers been able to make such alloys on a large scale from inexpensive iron.
By Peter Weiss -
AnimalsHide and See
A new look at fish on coral reefs considers the possibility that all that riotous color has its inconspicuous side.
By Susan Milius -
ChemistrySolar Hydrogen
With the vision of a hydrogen economy looming ever larger in people's minds, scientists have picked up the pace of their pursuit of materials that use solar energy to split water and make clean-burning hydrogen fuel.
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Gene Doping
Inserting genes for extra strength or speed could give athletes an unbeatable, and perhaps undetectable, advantage in competitive sports.