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Biology12342 articles archived since 1845

Eavesdropping on Dolphins

Inventor John Stuart Reid has patented a device he calls a CymaScope, which creates three-dimensional images of sound. He hopes to use it to identify specific dolphin sounds. Cynthia Graber reports...

January 14, 2009

Pterodactyls' Ptough Ptakeoffs

Johns Hopkins researcher Michael Habib contends that the weight carried by most pterosaurs meant that they needed to push off the ground with all four limbs to achieve takeoff (in a study published in the German journal Zitteliana Reihe B: Abhandlungen der Bayerischen Staatssammlung fur Palaontologie und Geologie )...

January 13, 2009

Can a good night's sleep prevent a cold?

People who get less than seven hours of shut-eye nightly are three times more likely to catch a cold than those who get eight or more hours, according to a new study.

January 12, 2009 — Coco Ballantyne

Do White Blood Cells Make Cancer Deadly?

The ability to spread underlies the killing power of cancer. The process occurs, John Pawelek thinks, when tumor cells fuse with white blood cells—an idea that, if right, could yield new therapies...

January 12, 2009 — Charles Q. Choi

Judging a Book by Its Genomes

A study to be presented at the meeting of the Bibliographical Society of America shows that some medieval manuscripts can be tested to establish place and time of origin--because the pages are made from animal skins that offer up DNA evidence...

January 12, 2009

Can open-heart surgery make you dimmer?

Every year, about half a million Americans undergo open-heart surgery. Roughly 60 percent of them experience some degree of mental decline after the surgery, a phenomenon that surgeons call "pumphead." A new study in this month's Annals of Thoracic Surgery sheds light on possible causes of the mysterious condition, which in some patients is temporary but in others may last a lifetime...

January 9, 2009 — Coco Ballantyne
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