Scientific American Magazine

The number of frogs, toads and salamanders is dropping in many areas of the world. The causes range from destruction of their local habitats to global depletion of the ozone layer

Four aging spacecraft are racing to the outer reaches of the solar system. Soon they may break through the last barriers to interstellar space

Machine learning improves significantly by taking advantage of information available from intelligent hints

Studies of courtship and mating in the fruit fly offer a window on the ways genes influence the execution of complex behaviors

Riddles posed by ancient works of art fall to historical analyses and electronic explorations

The infinite has always been a slippery concept. Even the commonly accepted mathematical view, developed by Georg Cantor,may not have truly placed infinity on a rigorous foundation

Mashkan-shapir was for a brief time one of the most important cities in the civilized world. Its remains challenge traditional notions of power distribution in early urban society

Policymakers frequently suggest that preventive medicine pays for itself. In fact, studies now show that this claim is rarely true. Still, prevention is often a worthy health investment