PARIS - The first vaccine against dengue fever, from France's Sanofi, provided moderate protection in a large clinical study, but questions remain as to how well it can help fight the world's fastest-growing tropical disease. | Video
LONDON - Pornography triggers brain activity in sex addicts similar to the effect drugs have on the brains of drug addicts, researchers said on Friday - but that doesn't necessarily mean porn is addictive.
- A toddler thought to have been cured of HIV now has detectable levels of the virus in her blood, the child's doctors and U.S. health officials said on Thursday.
CAPE CANAVERAL Fla. - A valiant effort to put a defunct NASA science satellite back to work came to a disappointing end this week after the 36-year-old spacecraft’s propulsion system failed, project organizers said.
MOSCOW - Russia launched its first new design of space rocket since the Soviet era from the northern military space port of Plesetsk on Wednesday, aiming to break its reliance on foreign suppliers as well as the Baikonur cosmodrome in Kazakhstan.
LONDON - Combining two types of polio vaccine, including one that is injected rather than given orally, appears to give better immunity and could speed efforts to eradicate the crippling disease, scientists said on Friday.
LONDON - British scientists have identified a set of 10 proteins in the blood that can predict the onset of Alzheimer's and call this an important step towards developing a test for the incurable brain-wasting disease.
WASHINGTON - You've heard of Sonic the Hedgehog, the video game character. But how about the half-pint hedgehog, the tiniest one that ever lived?
CHICAGO/ATLANTA - Stray vials of the deadly smallpox virus from the 1950s have been discovered at a federal lab near Washington, U.S. health officials said on Tuesday, the second lapse discovered in a month involving a deadly pathogen at a government facility.
OSLO - Swathes of the Amazon may have been grassland until a natural shift to a wetter climate about 2,000 years ago let the rainforests form, according to a study that challenges common belief that the world’s biggest tropical forest is far older.
WASHINGTON - Last year the U.S. Food and Drug Administration recommended that millions of dollars in research grants be awarded to scientists serving on its tobacco advisory committee, even as it rejected several projects deemed by a National Institutes of Health panel to have greater scientific merit, according to confidential scores reviewed by Reuters.