Scientific American Magazine

Solar cells, wind turbines and biofuels are poised to become major energy sources. New policies could dramatically accelerate that evolution

In recent experiments, physicists have replicated conditions of the infant universe--with startling results

Tapping the computing power of biological molecules gives rise to tiny machines that can speak directly to living cells

The astronomical version of Moore's law says that telescopes double in size every few decades. But today's designers think they can build a telescope three, five or even 10 times bigger within a decade

New research reveals strategies for blocking the molecular processes that lead to this memory-destroying disease

Before electronic calculators, the mechanical slide rule dominated scientific and engineering computation

Insight into how the world's largest river formed is helping scientists explain the extraordinary abundance of plant and animal life in the Amazon rain forest

New understanding of the biology behind a successful cancer therapy may lead to a drug that can treat an array of solid tumors