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Body Clock Doubles As Dinner Bell [60-Second Science]
Jeudi 22 Mai 2008 - 22:10 - 6 mois, 1 semaine depuis - 24 lectures - Presse spécialisée - Scientific American
[The following is an exact transcript of this podcast.]I had a roommate who couldn’t sleep unless it was pitch dark, so she wore a face mask to bed. But she’d gotten it from an airline, so one of the eye patches had a little sticker on it that said, “Wake me for meals.” Now a new study from Harvard Medical school suggests that she needn’t have bothered with the sticker. Because scientists there have found that the brain has a special “meal clock” that keeps animals from snoozing when there’s food to be had. The results appear in the May 23 issue of Science. [More]

Scientific American Magazine: Double-Helix Double Up
Dimanche 16 Mars 2008 - 22:00 - 8 mois, 2 semaines depuis - 24 lectures - Presse spécialisée - Scientific American
Talk about spooky action at a distance. Without any other molecules to guide them, double helices of DNA with identical sequences can recognize one another from a distance and even gather together.

Recruiting a Dangerous Foe to Fight Cancer and HIV [Features]
Mercredi 21 Mai 2008 - 12:00 - 6 mois, 2 semaines depuis - 24 lectures - Presse spécialisée - Scientific American
If you are pregnant or know anyone who is pregnant, you have almost certainly heard of Listeria, a dangerous bacterium that contaminates vegetables, dairy and meat. It is something you want to avoid: Listeria infections kill about 500 people a year in the U.S., and 2,000 more become seriously ill with food poisoning. Pregnant women are about 20 times more likely to become infected. [More]

Recruiting a Dangerous Foe to Fight Cancer and HIV [Features]
Mercredi 21 Mai 2008 - 12:00 - 6 mois, 2 semaines depuis - 24 lectures - Cancer - Scientific American
If you are pregnant or know anyone who is pregnant, you have almost certainly heard of Listeria, a dangerous bacterium that contaminates vegetables, dairy and meat. It is something you want to avoid: Listeria infections kill about 500 people a year in the U.S., and 2,000 more become seriously ill with food poisoning. Pregnant women are about 20 times more likely to become infected. [More]

Scientific American Magazine: Cell Defenses and the Sunshine Vitamin
Lundi 07 Janvier 2008 - 14:45 - 10 mois, 4 semaines depuis - 24 lectures - Cancer - Scientific American
It was called the sunshine cure, and in the early 20th century, before the era of antibiotics, it was the only effective therapy for tuberculosis known. No one knew why it worked, just that TB patients sent to rest in sunny locales were often restored to health. The same “treatment” had been discovered in 1822 for another historic scourge, rickets--a deforming childhood condition caused by an inability to make hardened bone. Rickets had been on the rise in 18th- and 19th-century Europe, coinciding with industrialization and the movement of people from the countryside to the polluted cities, when a Warsaw doctor observed that the problem was relatively rare in rural Polish children. He began experimenting with city children and found that he could cure their rickets with exposure to sunshine alone.

On the Trail of the Cat, Scientists Find Surprises
Dimanche 16 Mars 2008 - 21:00 - 8 mois, 2 semaines depuis - 24 lectures - Presse généraliste - The Washington Post (health)
If cat owners know anything about their pets, it's how enigmatic the creatures can be. But scientists have begun to pull back the feline veil, using the latest molecular tools to get a peek at their origins.

FDA Says Contaminant in Blood Thinner Is Nearly Identified
Vendredi 14 Mars 2008 - 21:00 - 8 mois, 3 semaines depuis - 24 lectures - Presse généraliste - The Washington Post (health)
Tests of the active ingredient produced in China to make heparin for Baxter International found a contaminant in 20 of 28 samples, further tying a spike in serious and occasionally fatal allergic reactions in American patients to the drug's overseas sources, officials said yesterday.

World Bank, India to Probe 5 Health Projects
Vendredi 14 Mars 2008 - 21:00 - 8 mois, 3 semaines depuis - 24 lectures - Presse généraliste - The Washington Post (health)
The World Bank and the Indian government have launched official investigations in response to an internal bank report that found "serious" incidents of fraud and corruption in five bank-financed health projects in India.

Report Criticizes FDA Over Spinach Packers
Mercredi 12 Mars 2008 - 21:00 - 8 mois, 3 semaines depuis - 24 lectures - Presse généraliste - The Washington Post (health)
Since 2001, nearly half of all federal inspections of facilities that package fresh spinach revealed serious sanitary problems, but the Food and Drug Administration did not take "meaningful" enforcement action, a House committee report released yesterday found.

Hearings on Tap Water Planned
Mercredi 12 Mars 2008 - 21:00 - 8 mois, 3 semaines depuis - 24 lectures - Presse généraliste - The Washington Post (health)
Several experts said this week that there is no need for people to alter their water-drinking habits for now, despite a journalistic investigation that found trace amounts of numerous pharmaceuticals, from prescription drugs to hormones, in tap water in 25 of 28 cities tested, including the...

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