Scientific American Magazine

Not long after the big bang's flash, all light left the cosmos. Astronomers are now solving the mystery of its return

For decades anthropologists have debated when and how our ancestors became skilled hunters. Recent discoveries have yielded surprising new insights

Long overlooked as a mere cellular housekeeper, RNA has emerged as a path to a new world of medical treatment

Targeting a microRNA in liver cells could disable a silent killer

An RNA-based treatment may stop the Ebola virus in its tracks

High-tech submersibles are poised to systematically explore the ocean's deepest trenches, answering long-standing questions about exotic creatures, the source of tsunamis and the origin of life on Earth

The first detailed maps of what our genes are doing inside our brains show how very different we are from mice and challenge a long-held theory of how our gray matter works

The rate of global temperature rise mayhave hit a plateau, but a climate crisis still looms in the near future

Integral calculus originated in a 17th-century debate that was as religious as it was scientific