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Biology12343 articles archived since 1845

Watch out Hawaii: Veggies may harbor rare parasite

Three people in Hawaii have come down with what appears to be a rare parasitic disease called rat lungworm disease in recent weeks. Two of the victims (friends who had a meal together) told the Honolulu Star Bulletin that they experienced "agonizing pain" after eating raw vegetables – and physicians fear they may have accidentally swallowed slug larvae hidden inside folds of raw peppers...

January 8, 2009 — Coco Ballantyne

CMV: A virus in search of a vaccine

With the exception of the so-called cervical cancer vaccine, no shots have been approved specifically to prevent malignant tumors. But cervical cancer, which is caused by the sexually transmitted human papillomavirus (HPV), isn't the only tumor linked to a virus; another is cytomegalovirus (CMV), a usually harmless form of herpes that's the target of a possible therapeutic cancer vaccine for brain tumor patients...

January 8, 2009 — Jordan Lite

Mount Everest climbers show survival on record-low oxygen

It's no secret that scaling Mount Everest tests the limits of human survival; more than 200 people have died trying to reach its summit. Today we have new information about just how seriously climbers push their bodies on the world's highest peak: Those who manage to stay alive do so on an amount of oxygen that is so minute it would only be seen, at sea level, in people who were in cardiac arrest or dead...

January 8, 2009 — Jordan Lite

Body Makes Own Aspirin Compound

A study in the Journal of Agricultural and Food Chemistry finds that humans can manufacture their own salicylic acid, the major part of aspirin. Another study, in Nature, shows that plants make their own salicylic acid at wound sites...

January 8, 2009

"Love hormone" may also help us recognize faces

Oxytocin, a hormone associated with trust and social bonding, also helps people recognize familiar human faces, according to a new study. Researchers say the findings, published today in The Journal of Neuroscience , could shed light on the causes of mysterious neurological and psychological disorders...

January 7, 2009 — Coco Ballantyne

The Evolution of Evolution

Scientific American Editor in Chief John Rennie discusses the special January issue of the magazine, which focuses on evolution--2009 being the 200th anniversary of the birth of Darwin and the 150th anniversary of the publication of The Origin of Species ...

January 7, 2009 — Steve Mirsky
Reflected Light Disrupts Animal Behavior

Reflected Light Disrupts Animal Behavior

A study in the journal Frontiers in Ecology and the Environment notes that reflected light--off of buildings or roadways--can be as disruptive to animal behavior as the direct light that attracts sea turtle hatchlings to begin life in the wrong direction...

January 7, 2009
New Galápagos species identified

New Galápagos species identified

Researchers led by biologist Gabriele Gentile of the University of Rome Tor Vergata have discovered a new species of land iguana living in the Galápagos that Darwin missed but may shed light on evolution...

January 7, 2009

Drugs trigger dramatic weight loss in fat mice

Drugs currently on the market but used for other purposes helped plump mice shed pounds by upping their response to the appetite-suppressing hormone leptin, according to a new study.

January 6, 2009 — Coco Ballantyne

A picture is worth a thousand words

Editor's note: Marine geophysicist Robin Bell is leading an expedition to Antarctica to explore a mysterious mountain range beneath the ice sheet. Following is the sixteenth of her updates on the effort as part of ScientificAmerican.com 's In-Depth Report on the "Future of the Poles."
AGAP SOUTH CAMP, ANTARCTICA—Since we first conceived this project, we have been acutely aware of the limited amount of time we would have in the field.  We wanted 35 days to complete the planned program...

January 6, 2009 — Robin Bell
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