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"A tiny "genetic patch" can be used to prevent a form of deafness which runs in families, according to animal tests. Patients with Usher syndrome have defective sections of their genetic code which cause problems with hearing, sight and balance."

"Thousands of rats will be fed Monsanto maize diets in a $23m, three-year 'Factor GMO' study into long-term health effects of GM food and associated pesticides"

"Pollution fears are on the up-and-up in Beijing once again as winter, the smoggiest season of them all, fast approaches. After the World Health Organization released a report labelling air pollution as a leading cause of cancer earlier this month, China's government is more frantic than ever to curb the level of PM 2.5 particles in the air"

Its expansion was frighteningly fast. A handful of cases were first recognized in the U.S. at the beginning of the 1980s, but AIDS was soon seen around the world. By 1990, the world had a pandemic on its hands. In 1997, the peak of the epidemic, more than 3 million people became newly infected with HIV. Then science struck back. Drugs approved for HIV treatment in the mid-1990s proved profoundly effective, transforming AIDS from a death sentence to a chronic illness. Those treatments, combined with an international commitment to manage the disease by providing access to free drug therapy, led to a steep drop in new HIV infections. The United Nations has kept track of HIV worldwide for the past couple of decades. Below, we use that data to explore some of the trends in HIV prevalence. (The chart shows the percentage of the population, ages 15 to 49, living with HIV.)

Researchers say hybrid of human gum cells and mouse stem cells raises possibility of growing new teeth on patient's jaw