Scientific American Magazine

Even the youngest children know, experience and learn far more than scientists ever thought possible

Total energy must be conserved. Every student of physics learns this fundamental law. The trouble is, it does not apply to the universe as a whole

California cities are pumping their treated wastewater underground to create electricity

After years of false starts, a new generation of DNA vaccines and medicines for HIV, influenza and other stubborn illnesses is now in clinical trials

Companies and regulators are squaring off over the controversial technique that yields natural gas but threatens to pollute freshwater supplies

Modern birds, long thought to have arisen only after the dinosaurs perished, turn out to have lived alongside them

How green is that electric car? Depends on where you plug it in

Robots on and above the battlefield are bringing about the most profound transformation of warfare since the advent of the atom bomb