Scientific American Magazine

Is the red wolf a species or a long-established hybrid of the gray wolf and the coyote? Such distinctions may aect ongoing eorts to save a variety of endangered species

Digital color systems can reproduce paper money with disconcerting accuracy. The U.S.government's response is a new series of notes

The implants, islet cells of the pancreas, can potentially cure many cases of diabetes. A prime obstacle to wide use -- lack of a safe way to avoid immune attacks on the grafts -- now seems to be crumbling

Recent reconstructions and computer simulations reveal time. Operating principles of the most powerful weapon of its time

Traditional wood, charcoal and coal stoves are used in hundreds of millions of homes. Their redesign can have a dramatic effect on energy usage, the environment and community health

Although Oppenheimer is now best remembered for his influence during World War II, he made many important contributions to theoretical physics in the 1930s

By tailoring the electrical properties of conducting polymers, researchers hope to render electronics a bit more organic

Beneath the surface of the ocean, sunlight is, gradually extinguished, but the resulting darkness yields to a host of bioluminescent creatures