Improving family planning in poor nations is a more effective way to cut CO2 emissions than wind turbines, a new initiative claims.

WASHINGTON -- House Republicans pointed to controversial e-mails leaked from climate scientists and said it was evidence of corruption. Top administration scientists looking at the same thing found no such sign, saying it doesn't change the fact that the world is warming.

The worldwide safety experience of endoscopist-administered propofol sedation now exceeds 600,000 patients. The low rate of serious adverse events underscores the safety of nonanesthesiologist-administered propofol (NAAP) for gastrointestinal (GI) procedures, provided that it is administered by a team of individuals who have received training specific to the administration of propofol according to the "Position statement: nonanesthesiologist administration of propofol for GI endoscopy" issued by the four major gastroenterology and hepatology societies.

The study of tobacco has been the life-long focus of his research and now, Peter Shields, M.D., deputy director of the Lombardi Comprehensive Cancer Center at Georgetown university Medical Center, has led the effort to edit a special edition of Cancer Epidemiology, Biomarkers & Prevention dedicated to best research practices in tobacco science from researchers the world over.

The Obama administration has begun approving new lines of human embryonic stem cells that are eligible for federally funded experiments, opening the way for millions of taxpayer dollars to be used to conduct research that was put off-limits by President George W. Bush.

The brain of a man who lost the ability to form new memories will be digitally mapped in exquisite detail.

WASHINGTON -- scientists can start using taxpayer dollars to do research with 13 batches of embryonic stem cells and the government says dozens more cell lines should be available soon, opening a new era for the potentially life-saving field.

This year we have been celebrating Charles Darwin and his Origin of Species. Sadly, little has been heard of Alfred Wallace, who, according to a recent book by Roy Davies (The Darwin Conspiracy), has a stronger claim to the theory of evolution by natural selection than has Darwin. In 1855, Wallace's first paper on evolution prompted Charles Lyell to warn Darwin that Wallace seemed close to solving the "species problem" and to urge him to publish his own theory.Three years later, while studying the fauna of the Malayan archipelago, Wallace completed his theory and sent it to Darwin from the island of Ternate on 9 March 1858. Sent to England on the same boat was a letter to Frederick Bates, who received it on 3 June. It seems that Darwin wrote to Joseph Hooker on 8 June, saying he had found the "missing keystone" that enabled the completion of his evolution theory, while on 18 June, he wrote that he had just received a letter from Wallace proposing a theory of evolution identical to his

New research has debunked some of the negative stereotypes of the impact child care may have on a child's development.

Surgeons can transplant unwanted fat from a patient's thighs or buttocks and use it to create bigger breasts; after being condemned in the early '90s, this procedure is generating newfound excitement.