New data from a long-term survey suggests that U.S. teens are no less active today than they were in 1991. Yet they've gotten increasingly heavier over the same period
TIME looks at what's on the agenda for the talks in Copenhagen that begin on Dec. 2
The controversy over a video recently produced by the autism advocacy group Autism Speaks highlights the ongoing dissent that characterizes the autism community
British scientists begin a new study on Tuesday to consider how human DNA is used in animal experiments and to determine what the boundaries of such controversial science might be
In its first study of women's health around the globe, the World Health Organization said Monday that the AIDS virus is the leading cause of death and disease among women between the ages of 15 and 44
India staunchly refuses to take action on lowering carbon emissions, saying the West must concede first. Can agreements be made at next month's Copenhagen talks?
A growing body of research suggests that early life experience changes the way genes respond to the world.
For the first time, obesity researchers have data showing that the least healthy cereals are the ones marketed most aggressively to kids
Knowing someone's test results isn't good enough. Before you hop into bed, here's what you should always ask.
Tina and Rod Davies have turned their living room in Victoria, Australia into a nursery for orphaned kangaroos and wallabies
At 5 a.m. on Sept. 30, the Centers for Disease Control and Prevention (CDC) will launch its largest vaccine giveaway in decades. It's not the usual way influenza immunizations are distributed, but nothing about this flu season is normal
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