Scientific American Magazine

Although viruses challenge our concept of what "living" means, they are vital members of the web of life

Research into natural chemicals that mimic marijuana's effects in the brain could help to explain--and suggest treatments for--pain, anxiety, eating disorders, phobias and other conditions

Our third annual salute to the people and institutions brightening our future recognizes accomplishments in stem cells, nanocomputers, mini fuel cells and more

Did the British steal Neptune?

Seventy-five million to 70 million years ago, a group of hardy dinosaurs thrived in the harsh climate of what is now northern Alaska

A much publicized assertion holds that 15th-century painters achieved a new level of realism with the help of lenses and mirrors. But recent findings cast doubt on that idea