All Stories
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- Health & Medicine
Infection time
Disease is more severe when it hits in the morning, at least in mice.
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BrainExplainer: Our bodies’ internal clocks
Biological clocks determine hunger, sleepiness and other daily rhythms.
- Health & Medicine
Flu in the air
Germs tiny enough to pass through surgical masks may cause half of all cases.
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‘Cool’ research for the president
Easton James LaChappelle was one of 14 White House Science Fair participants who presented his research to the president.
By Sid Perkins - Climate
Tornado caught storm chasers
On May 31, 55-year-old Tim Samaras died chasing tornadoes.
By Janet Raloff - Plants
Old, cold moss grows again
Mosses are mini but mighty: Even after centuries buried beneath a glacier, some of these small, flowerless plants can regrow.
- Health & Medicine
An itch switch
Scientists identify a chemical that helps the brain know where to scratch.
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Health & MedicineWanted: ‘Smart’ cleaners
Active surfaces will — on their own — help remove everything from insects and germs to poisons.
By Roberta Kwok - Chemistry
A penny for your health?
Copper is best known as the reddish metal used to make pennies, electrical wiring and weather vanes. But two teen scientists think copper should find its way into medical settings as well. Their data suggest the metal — in bandages or on surfaces — could play a major role in killing some types of bacteria responsible for serious infections.
By Sid Perkins - Health & Medicine
Killer-flu update
Infection that recently developed in China shows signs of being easy to spread and hard to kill.
By Janet Raloff