Deaths not linked to H1N1 vaccine: WHO

GENEVA (Reuters) -- The World Health Organization said on Thursday the H1N1 vaccine had been cleared of blame for 41 deaths which health authorities worldwide had investigated after suspicions they might have been caused by the inoculation.

Breast cancer study identifies tumor-causing enzyme

Scientists have identified an enzyme that is crucial for turning breast tissue into tumors, according to a study published in the journal Cell.

Stem cells may offer alternative to lung transplants

Belgian scientists who used embryonic stem cells to create lung tissue said this technique could provide an alternative to lung transplants for patients with chronic obstructive pulmonary disease (COPD) and cystic fibrosis.

Second Bangladeshi twin opens eyes after separation op

MELBOURNE (AFP) -- A second Bangladeshi twin began returning to consciousness on Friday, three days after being separated from her conjoined sister in a landmark operation in Australia, the hospital said.

Face transplant patient can smell, taste, breathe normally

The woman who underwent the first facial transplant in the United States can now smell, taste what she eats and breathe through her nose, according to a report from her surgeons.

Research sheds light on causes of Parkinson's

Gene mutations linked to inherited Parkinson's disease also appear to be connected to the more common form of the disease that strikes people whose relatives don't have it, researchers now say.

Industrialized nations unveil plans to rein in emissions

With less than three weeks remaining before negotiators gather in Copenhagen to hammer out a global response to climate change, a rapid-fire succession of countries are unveiling national plans that serve as opening bids for reining in heat-trapping emissions.

Military experiment seeks to predict PTSD

WENTYNINE PALMS, Calif. (AP) – Two days before shipping off to war, Marine Pfc. Jesse Sheets sat inside a trailer in the Mojave Desert, his gaze fixed on a computer that flashed a rhythmic pulse of contrasting images.

Google says PC will start in seven seconds or less

MOUNTAIN VIEW, California (Reuters) -- New Google Inc software will start up a computer as fast as a television can be turned on, the search company said on Thursday as it showed off its Chrome operating system designed for PCs that do their work on the Web.

3 new ancient crocodile species fossils found

WASHINGTON – A 20-foot-long crocodile with three sets of fangs — like wild boar tusks — roamed parts of northern Africa millions of years ago, researchers reported Thursday. While this fearsome creature hunted meat, not far away another newly found type of croc with a wide, flat snout like a pancake was fishing for food.