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Dernières entêtes d'Actus

The Smoke Screen of Vintage Ads
Samedi 18 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
NEW YORK -- A phalanx of white-coated doctors endorses Camel cigarettes in an exhibit that opened this month at the New York Public Library.

5 Years of Reflection, Salutes For Sacrifices 'in Harm's Way'
Samedi 18 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
The elegant dining room fell silent as the toastmaster called for a salute. Young men and women paused at their tables, some missing limbs and eyes, some in wheelchairs, some with canes and scars. A pair of crutches leaned against the wall beside a portrait of Abraham Lincoln.

Genome Database Will Link Genes, Traits in Public View
Vendredi 17 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
BOSTON -- George Church wants to put his personal genetic blueprint online for all to see -- the sequence of chemical bases that make him who he is, a lanky scientist of Scottish ancestry who has dyslexia, narcolepsy and motion sickness.

Questions Linger About McCain's Prognosis After Skin Cancer
Vendredi 17 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
In May, the presidential campaign of 72-year-old cancer survivor John McCain tried to put to rest doubts about his health by allowing a few reporters to inspect his medical records, but the effort has failed to quell questions about his odds of surviving an eight-year tenure in the White House.

Breaking Down Barriers in Science with Help from a Jellyfish: A Q&A with Martin Chalfie
Vendredi 17 Octobre 2008 - 15:00 - 1 mois, 2 semaines depuis - Presse spécialisée - Scientific American
On October 8, Martin Chalfie, chairman of Columbia University's Department of Biological Sciences, got the call that every scientist wants to receive--only he slept right through it. The Nobel Foundation was ringing him at about 6 A.M. (in New York City) to let him know they had just awarded him, along Osamu Shimomura and Roger Tsien, this year's Nobel Prize in Chemistry for their work on green fluorescent protein (GFP). A few minutes after the phone stopped ringing, Chalfie logged onto the Nobel Foundation's Web site to see who they had honored this year, only to find himself in the winner's circle for a tool he had helped develop to let scientists illuminate and study living cells in real time.We sat down with Chalfie in his office on Columbia's campus to discuss the Nobel, GFP and his other research. [More]

Hubble reste en mode veille
Vendredi 17 Octobre 2008 - 10:58 - 1 mois, 2 semaines depuis - Presse généraliste - Nouvel Observateur Sciences
Le télescope spatial est toujours muet. L’opération destinée à mettre en route un nouveau canal de diffusion n’a pas encore abouti.

Les volcans ont-ils essaimé la vie sur Terre?
Vendredi 17 Octobre 2008 - 10:30 - 1 mois, 2 semaines depuis - Presse généraliste - Nouvel Observateur Sciences
Des chercheurs ont de nouveau analysé les résultats d’une expérience très célèbre menée en 53 sur l’origine de la vie sur Terre. Ils en concluent que les volcans auraient été de très bons laboratoires pour fabriquer les premières molécules organiques.

Understanding Grief: When Time Doesn't Heal All Wounds
Jeudi 16 Octobre 2008 - 22:00 - 1 mois, 2 semaines depuis - Presse spécialisée - Scientific American
Losing a loved one is always painful, but for most people time eventually heals the wounds. For about 10 to 20 percent of the bereaved, however, accepting and getting over a loss remains extremely difficult, even years later. Now researchers have come a step closer to elucidating the neurobiological underpinnings of this condition called complicated grief (CG). An August 15 functional MRI study in NeuroImage shows that in CG patients reminders of the deceased activate a brain area associated with reward processing, pleasure and addiction.A team led by Mary-Frances O’Connor of the University of California, Los Angeles, studied 23 women--11 of whom suffered from CG--who had lost a mother or sister to breast cancer in the past five years. While in the scanner, the women saw pictures and words that reminded them of their loved one. Brain networks associated with social pain became activated in all women, but in the CG patients reminders of the deceased also excited the nucleus accumbens, a forebrain area most commonly associated with reward. [More]

Agencies Rated on Scientific Candor
Jeudi 16 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
The Environmental Protection Agency and Occupational Safety and Health Administration have among the most restrictive policies in the federal government on releasing scientific information to the press and public, according to a "report card" being issued today by the Union of Concerned Scientists.

Disinfectants Can Boost Bacteria's Resistance to Treatment
Jeudi 16 Octobre 2008 - 21:00 - 1 mois, 2 semaines depuis - Presse généraliste - The Washington Post (health)
THURSDAY, Oct. 16 (HealthDay News) -- Improper use of chemical disinfectants might actually make the bacteria they are trying to kill stronger and more resistant over time, a new report says.

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