Life
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- Brain
Respecting the body’s clocks
Daily rhythms affect everything from the time we wake to how well we perform in sports.
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- Microbes
The power of microbes
A living animal is never alone. Its body — like yours — is home to trillions of microbes, or tiny single-celled organisms. Those microbes aren’t just hitchhiking. They can play an important role in separating species, researchers now report.
- Animals
Amputated ‘finger’ tips grow back
Both toenails and toe tips grew back in mice, thanks to special ‘stem’ cells living beneath the nails.
- Life
Explainer: What is a stem cell?
Special cells have ability to turn into several different types
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- Brain
Headers and memory loss
Soccer players who frequently use their heads score worse on memory tests.
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- Health & Medicine
Infection time
Disease is more severe when it hits in the morning, at least in mice.
- Brain
Explainer: 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.
