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Humans are not alone in aiding others
Far from being a nagging exception to the rule of evolution, cooperation has been one of its primary architects
New techniques for teaching computers how to learn are beating the experts
A neuroscientist explains how he discovered serendipitously the guffaw of a rodent
Do animals other than humans have a sense of humor? Maybe so
A rare group of HIV-positive individuals need no medicine to keep the virus in check. Their good fortune could point the way to more powerful treatments--and perhaps a vaccine
The tools of science have changed since the golden age of physics, but many of the same questions remain
In selections from the archives of Scientific American, physicists give firsthand accounts of their groundbreaking work
At 10:31 P.M. Pacific time on August 5, NASA's Curiosity rover will begin the first direct search for habitable environments on Mars
Nimble robots like this Cheetah will help the military navigate terrain too rocky for wheels
As glaciers collapse toward the sea, scientists struggle to figure out how fast the southern continent is melting and what that means for sea-level rise
Solutions for the Freshwater Crisis
New technologies are helping to purify water contaminated by pathogens or polluted with chemical agents, such as those used to extract fossil fuels from the earth in hydraulic fracturing, aka fracking.
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