Scientific American Magazine

The most massive objects in the universe are huge clusters of galaxies and gas that have slowly congregated over billions of years. The process of agglomeration may now be ending

Now that genetically modified and copied mammals are a reality, biomedical researchers are starting to develop imaginative ways to use this technology

Radiation a billion times brighter than the sun's is illuminating a host of scientific and technical phenomena

Recent advances in diagnosis and treatment promise to extend survival time and improve the quality of life for many patients

These masters of camouflage are fierce predators—and one of the few species in which males become pregnant

Inserting new genes into a few specific insect species could stop some infectious diseases, benefit agriculture and produce innovative materials

During the most trying years of Japan's history, two brilliant schools of theoretical physics flourished

Unlike oil, steel or paper, software is an intangible commodity. This elusive quality makes computer programs difficult to quantify