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Factoring Fear: What Scares Us and Why
Lundi 27 Octobre 2008 - 08:00 - 1 mois depuis - 16 lectures - Presse spécialisée - Scientific American
What's scarier, a deadly snake slithering across your path during a hike or watching a 1,000-point drop in the stock market? Although both may instill fear, researchers disagree over the nature and cause of this very powerful emotion."When you see the stock market fall 1,000 points, that's the same as seeing a snake," says Joseph LeDoux, professor of neuroscience and psychology the Center for the Neuroscience of Fear and Anxiety based at New York University. "Fear is the response to the immediate stimuli. The empty feeling in your gut, the racing of your heart, palms sweating, the nervousness--that's your brain responding in a preprogrammed way to a very specific threat." [More]

Kaine to Overhaul Mental Health System
Jeudi 13 Décembre 2007 - 22:00 - 11 mois, 3 semaines depuis - 16 lectures - Presse généraliste - The Washington Post (health)
Gov. Timothy M. Kaine (D) is expected to propose spending more than $40 million today to begin overhauling the state's mental health system, which has come under intense scrutiny since 32 people were killed this year at Virginia Tech by a gunman with a history of psychiatric problems, according to...

Updates: Whatever Happened to Protecting Cells from Radiation? [Scientific American Magazine]
Vendredi 27 Juin 2008 - 06:18 - 5 mois, 1 semaine depuis - 16 lectures - Cancer - Scientific American
Ozone Recovery, Warmer AntarcticaThe Antarctic ozone hole that forms every spring has kept that continent's interior cold even as the rest of the world has warmed over the past few decades [see "A Push from Above"; SciAm, August 2002]. Thanks to the global ban on chlorofluorocarbons, stratospheric ozone levels there are slowly recovering. A repaired hole, however, could speed Antarctic ice melting and change weather patterns, according to a computer model by Judith Perlwitz of the University of Colorado at Boulder and her colleagues. With more ozone, the lower stratosphere would absorb more ultraviolet light and warm up by as much as nine degrees Celsius. That in turn would break down circulation patterns that trap cold air over Antarctica's interior, making the continent heat up. The changed patterns would also make Australia warmer and drier, and South America could get wetter. Such ozone details may need to be worked into global climate models, most of which have neither incorporated such effects nor included enough of the stratosphere. The journal Geophysical Research Letters published the study on April 26. [More]

BOOK REVIEW: Musicophilia: Tales of Music and the Brain
Mercredi 21 Mai 2008 - 06:55 - 6 mois, 2 semaines depuis - 16 lectures - Presse spécialisée - New England Journal of Medicin
When I was an infant, my father set up a little record player near my crib. He was a man of few words, and his love of music was out ...

Common Symptoms Can Deceive
Lundi 10 Décembre 2007 - 22:00 - 11 mois, 3 semaines depuis - 16 lectures - Presse généraliste - The Washington Post (health)
All her life, Jamie Fear's gut had been her proverbial Achilles' heel. When other people contracted colds or other respiratory infections, she got stomach viruses. She tried to baby her digestive system and learned to live with her sensitive stomach.

Virus Starts Like a Cold But Can Turn Into a Killer
Lundi 10 Décembre 2007 - 22:00 - 11 mois, 3 semaines depuis - 16 lectures - Presse généraliste - The Washington Post (health)
Infectious-disease expert David N. Gilbert was making rounds at the Providence Portland Medical Center in Oregon in April when he realized that an unusual number of patients, including young, vigorous adults, were being hit by a frightening pneumonia.

Les 10 gènes de la croissance
Lundi 12 Mai 2008 - 08:45 - 6 mois, 3 semaines depuis - 16 lectures - Presse généraliste - Nouvel Observateur Sciences
Une étude internationale menée sur le génome a permis de découvrir dix gènes impliqués dans la régulation de la taille chez l’Homme.

Pas de risques de fausses couches après un traitement radioactif
Mardi 20 Mai 2008 - 09:27 - 6 mois, 2 semaines depuis - 16 lectures - Presse généraliste - Nouvel Observateur Sciences
L’iode radioactif administré pour le traitement des cancers de la thyroïde n'augmente ni le risque de fausse couche, ni celui de prématurité. A la naissance, les bébés conçus après le traitement, n’ont pas plus de risques de faible poids que ceux nés antérieurement à la maladie.

Death Toll May Climb in China Earthquake Aftermath [News]
Jeudi 15 Mai 2008 - 14:00 - 6 mois, 2 semaines depuis - 16 lectures - Presse spécialisée - Scientific American
SHANGHAI, China--The Chinese government announced today that the death toll from Monday's devastating earthquake could climb to more than 50,000 people. [More]

Are Backyard Ethanol Brewers an Answer to High-Priced Gas? [News]
Vendredi 09 Mai 2008 - 13:00 - 6 mois, 3 semaines depuis - 16 lectures - Presse spécialisée - Scientific American
A company banking on drivers' weariness of skyrocketing gasoline prices unveiled a home refinery device on Thursday offering another option: ethanol. E-Fuel Corporation says its EFuel100 MicroFueler can produce up to 35 gallons (132 liters) of ethanol a week that consumers can pump directly into their cars and trucks. There is no combustion inside the device, which runs on a standard household 110- to 220-volt AC power supply (consuming about 150 watts*) and uses a membrane system to distill the sugar, yeast and water solution required to make ethanol rather than combustion heating elements, as commercial ethanol producers do. [More]

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