Scientific American Magazine

Batteries and fuel cells? Cleaner air and reduced oil imports can be won by redesigning conventional internal-combustion-powered vehicles

Mongolia's Gobi Desert contains one of the richest assemblages of dinosaur remains ever found. Paleontologists are uncovering much of the region's history

Radar systems carried aloft by the space shuttle Endeavour provide a new perspective of the earth's environment

Synthetic strands of DNA are being developed as drugs. Called antisense and triplex agents, they can potentially attack viruses and cancers without harming healthy tissue

In quantum mechanics, objects can behave as particles or as waves. Studies now emphasize that such complementary features are more fundamental than has generally been appreciated

Many agreements aim to protect the global environment. But actually making them do so requires innovative approaches

This tropical alga is the world's largest single-celled organism. Yet it differentiates into a complex structure of leaves, stems and roots

Scientists now transmit reports of their research--from first inspiration to final result--over electronic networks. Even live experiments can be witnessed on-line. Publishers and libraries may never be the same