Fresh evidence suggests early Earth wasn’t locked under a rigid stagnant lid but was already experiencing intense subduction.

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

Scientists have discovered that complex life began evolving much earlier than traditional models suggested. Using an expanded ...

Scientific American sits down with nature writer Robert Macfarlane to discuss his latest book—one of our top picks of ...

For millennia, humans evolved beneath open skies, surrounded by forests, rivers and the rhythms of the natural world. This ...

Fleets of satellites interfere with snapshots taken by Earth-bound observatories. But a new study suggests these orbiters ...

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

Around 56 million years ago, Earth suddenly got much hotter. Over about 5,000 years, the amount of carbon in the atmosphere ...

University of Alberta geochemists have discovered a missing piece to one of the great mysteries of science—the origin of life ...

Scientists found the first natural proof that underwater volcanoes make ammonia without biology, a reaction that may have ...

NASA revealed that scientists discovered sugars that are “essential” to life and a “gum-like” substance on the space rock ...

People living near protected areas share stories about how these places shape their daily lives, memories, work, and identity ...