Scientific American Magazine

Unconscious impulses and desires impel what we think and do in ways Freud never dreamed of

Moons orbiting distant exoplanets may account for most of the habitable locales in the galaxy. If only we could find them

In creating the first complete computer model of an entire single-celled organism, biologists are forging a powerful new kind of tool for illuminating how life works

The great hope for a quick and sweeping transition to renewable energy is wishful thinking

Microscopes transform the way we see and understand the creatures on our planet

What started as a “Star Wars” idea for a 1980s-era antimissile weapon is now a microscope of unprecedented power, able to create exotic forms of matter found nowhere else in the universe

Copernicus famously said that Earth revolves around the sun. But opposition to this revolutionary idea didn't come just from the religious authorities. Evidence favored a different cosmology