CHICAGO (Reuters) - Indoor tanning beds sharply increase the risk of melanoma, the deadliest kind of skin cancer, and the risk increases over time, U.S. researchers said on Thursday, and others experts called for tighter regulation.

WASHINGTON (Reuters) - A gene silencing approach can save monkeys from high doses of the most lethal strain of Ebola virus in what researchers call the most viable route yet to treating the deadly and frightening infection.

CHICAGO (Reuters) - The United States may provide an incubating ground for some flu strains, helping them migrate to warmer climates, U.S. researchers said on Thursday.

WASHINGTON (Reuters) - Synthetic biology can be used to make nonpolluting fuel, instant vaccines against new diseases and inexpensive medicines, but it will take time, collaboration and a nurturing regulatory environment, scientists said on Thursday.

WASHINGTON (Reuters) - Johnson & Johnson <JNJ.N was blasted by lawmakers on Thursday for its massive recall of children’s medicines, as regulators said a string of recent manufacturing lapses could lead to civil or criminal charges.

WASHINGTON (Reuters) - Sellers of ginseng, echinacea and other herbal and dietary supplements often cross the line in marketing their products, going as far as telling consumers the pills can cure cancer or replace prescription medications, a U.S. government probe found.

CHICAGO (Reuters) - Heavy smokers who get lung cancer may have tens of thousands of genetic mutations, U.S. researchers said on Wednesday.

WASHINGTON (Reuters) - U.S. health regulators are investigating hundreds of reported complications with dozens of recalled children’s medications made by Johnson & Johnson, including 30 deaths, but so far no direct link has been found, according to a congressional report.

NEW YORK (Reuters Health) - Helping kids with autism learn how to communicate doesn’t improve their symptoms, British researchers reported at an international meeting on the developmental disorder.

NEW YORK (Reuters Health) - Using frozen embryos may level the playing field for African-American and white women undergoing in vitro fertilization, a new study suggests, despite earlier research showing that African- American women have lower success rates with the procedure than white women do.