Scientific American Magazine

Hemorrhagic fever viruses are among the most dangerous biological agents known. New ones are discovered every year, and artificial as well as natural environmental changes are favoring their spread

The surprising finding that even the youngest stars commonly exist in sets of two or three has revised thinking about the birth of star systems

Quantum-mechanical computers, if they can be constructed, will do things no ordinary computer can

Detonation of small quantities of strategically placed explosives can demolish an unwanted high-rise in a matter of seconds

Mammals can recognize thousands of odors, some of which prompt powerful responses. Recent experiments illuminate how the nose and brain may perceive scents

The raw visual and textual evidence of his imagination, Edison's notebooks were the unrevealed talismans of the inventor's career

The authors of a provocative hypothesis spell out their reasons for suspecting that hormone-mimicking chemicals in the environment contribute to many unexplained cases of breast cancer

Psychologists and others try to sidestep old pitfalls—both political and scientific—as they apply evolutionary theory to the clothed ape