Science

Biogen, Merck, Bayer MS Drugs Targeted by Test Predicting Which Ones Work Multiple sclerosis drugs from Biogen Idec Inc., Merck KGaA and Bayer AG with sales of $6.1 billion work for fewer than 3 in 4 patients and a test can predict which ones, a study found.

Tyrannosaurus Rex Ancestors Once Roamed Australia, Bone Discovery Proves Tyrannosaurus rex’s ancestors once roamed Australia, according to researchers who said a bone discovery provides the first evidence the fearsome dinosaur’s predecessors lived in Southern continents.

Mammograms Fail to Reduce Breast-Cancer Deaths, Danish Researchers Find Screening women for breast cancer failed to significantly reduce the number of deaths from the malignancy, contrary to earlier findings, a Danish study found.

China Tops India on World Diabetes Ladder as Economic Boom Spurs Obesity China has overtaken India as the global epicenter of the diabetes epidemic after a study showed twice as many Chinese are afflicted with the disease as previously estimated.

Siberian Fossil Yields Ancient DNA From Finger of Long-Lost Human Ancestor A fossil uncovered by an international team of researchers in a Siberian cave had yielded the DNA of a now-extinct human ancestor, painting a much more complex and dynamic picture of life 40,000 years ago.

Women Need an Hour of Exercise Daily to Stay Fit While Aging, Study Says Women need an hour of exercise each day, double that recommended by some federal guidelines, to minimize weight gain as they get older, a Harvard University study found.

Medical Journal Seeks Rule on Publishing in Glaxo Avandia Study Aftermath Industry-sponsored drug research should be analyzed by scientists without ties to the company developing a product, said an editorial in the Journal of the American Medical Association.

Tanning Beds May Need Stronger Warning on Cancer Risks, FDA Reviewers Say Ultraviolet lamps used to darken the skin may get new cancer warnings from U.S. regulators, further threatening an industry already facing a 10 percent tax on tanning salons.

Researchers Backing Glaxo's Diabetes Drug Had Financial Ties to Drugmaker Most scientists who published articles supporting GlaxoSmithKline Plc’s diabetes drug Avandia after it was linked to heart disease in 2007 had financial ties to the company, according to a Mayo Clinic report.

Extreme Obesity Increasing, Found in 6.4% of Children, Kaiser Study Says Extreme obesity affects about 6.4 percent of children, according to a Kaiser Permanente study that suggests overweight kids are getting even heavier.