Beijing's decision to bring targets on carbon emissions reductions to Copenhagen is hopeful, but it is important to understand what exactly Beijing is promising — and what it's not
After years of complications and high-profile setbacks, a series of small but intriguing advances has suggested that gene therapy may hold real future potential for treatment
A new study suggests that the East Antarctic ice sheet, which holds about five times as much ice as West Antarctica and Greenland combined, is in decline
On the 150th anniversary of the publication of On the Origin of Species, political journalist Dennis Sewell talks to TIME about how the naturalist's big idea has been harnessed for sinister ends
China has detected eight cases of swine flu mutation, a health official said Wednesday, amid longstanding concerns among scientists that the virus could change into a more dangerous form
An odd new species of ancient crocodiles stood on two legs, lived alongside dinosaurs and sometimes even hunted them
According to estimates from researchers at the University of Chicago, the total number of Americans with diabetes will double in the next 25 years.
TIME looks at what's on the agenda for the talks in Copenhagen that begin on Dec. 2
We turned to a top dietitian for tips on how to enjoy the holiday without overdoing it
From the Moon to Mount Everest, our list of the greatest leaps and highest climbs in human history
Heidi Cullen finds out how the North Greenland Eemian Ice Drilling Project is using ice to map our history in this Climate Central report
Photographer David Friedman explores the inspiration that moves inventors
Ask Your Questions: Garrison Keillor
Obama's First State Dinner
The Princess and the Frog: Big Fun on the Bayou
Me and Orson Welles: Zac Efron Takes the Stage
TIME.com's Holiday Gift Guide 2009
Norman Rockwell: The Photographs Behind the Art
Weekly Acoustic News: Thanksgiving Edition
The Gospel of Glee: Is It Anti-Christian?
Can a Good Guy Fix College Football's Worst Thing?
The Road on Film: Beautiful, Bleak