science
The solutions to our energy problems don't start with individuals shutting the lights off at home. They start with public policy -- the only force that can actually change how the infrastructure and shared systems work.
WHAT'S HAPPENING
How's it all going to end? Being a cosmologist, I'm not talking about our new year, but about our universe, billions of years from now. This question has gotten me worrying about what I call the Big Snap.
Cara Santa Maria examines the efficacy of various methods of sex education.
Dr. Luc Montagnier, the French virologist who won the Nobel Prize in 2008 for discovering the AIDS virus, has surprised the scientific community with his strong support for homeopathic medicine.