Scientific American Magazine

Analyzing all the layers of the immune system at once speeds design and may one day deal a decisive blow against HIV

Hearing specialist and sax player Charles J. Limb says that studying the brain during flights of improvisation may provide new understanding of creativity—as well as insight into the musical genius of John Coltrane

Animal mimicry takes many forms—including chemical and acoustic varieties—and offers unique insights into evolution

The failure rate may be 90 percent, but if any of these exotic technologies succeeds, it could significantly improve energy security and efficiency

Our bodies adjust to the cycle of day and night thanks to specialized neurons in our eyes. Ongoing study of these cells could lead to new treatments for winter depression and other conditions

By the latest estimate, the observable universe contains 200 billion galaxies. Astronomers wonder: Why so few?

A fancy cosmic-ray detector, the Alpha Magnetic Spectrometer, is about to scan the cosmos for dark matter, antimatter and more

A forgotten number system invented in the 19th century may provide the simplest explanation for why our universe could have 10 dimensions

Pigweed, ragweed and other monsters have begun to outsmart the advanced technologies that protect the biggest U.S. cash crops