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Biology12550 articles archived since 1845

The Baby Nobels

SciAm.com met up with the 40 finalists of the Intel Science Talent Search, considered the "Super Bowl" of science. Christie Nicholson reports

March 10, 2009

Do optimists live longer?

A perennial grump? Always see the glass as half empty instead of half full? Might want to brighten up a bit – if, that is, you'd like to live longer.

March 6, 2009 — Coco Ballantyne

Waking in the Dark: Daylight Saving Time

Remember to turn clocks ahead one hour this weekend and, if possible, sleep in until the sun rises. Sleep researchers say waking with light is the best remedy for the winter doldrums. Christie Nicholson reports...

March 6, 2009

First domesticated horses in central Asia more than 5,000 years ago

It's pretty hard to milk a wild mare. So researchers attempting to determine whether ancient Botai in northern Kazakhstan had domesticated horses tested their pottery for evidence that they were as fond as their modern descendants of mare's milk (you can see [ left ] a modern mare being milked by a Kazakh woman)...

March 5, 2009 — David Biello

Are doctors zapping patients with too much radiation?

A new study says that the average American is exposed to six times more radiation from medical tests than in the early 1980s, prompting warnings that physicians may be upping patients' cancer risk by giving them unnecessary exams. 

A study by The National Council of Radiation Protection and Measurements (NCRP) shows that the average American's overall radiation exposure jumped from 3.6 millisieverts (mSv) to 6.2 mSv per year -- almost entirely a result of radiation-based medical tests...

March 5, 2009 — Coco Ballantyne

Morally Repugnant

A recent study in the journal Science shows that we display the same facial reaction to moral wrongs as we do to bad tastes or smells. Karen Hopkin reports

March 5, 2009
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