Archaeology

Limb analysis suggests dinosaurs moved with short, fast strides.

This three-dimensional CT scan has unraveled a number of mysteries surrounding a two-millennia-old mummy—although not the mummy itself.

Fossils, climate records and DNA reveal unpredictability of ice-age die-offs.

A doctoral student performed acoustic archaeology to determine how music could have been properly appreciated in a cavernous 16th-century church. Sarah Fecht reports

A fossil of a shrewlike creature pushes back by 35 million years the day when mammals first nourished their young in the womb

A single grain of moon sand (magnified here about 300 times) reveals a ring created by a micrometeorite that struck it

Humans colonized the New World earlier than previously thought—a revelation that is forcing scientists to rethink long-standing ideas about these trailblazers

Books and recommendations from Scientific American

Fracturing a deep shale layer one time to release natural gas might pose little risk to drinking-water supplies, but doing so repeatedly could be problematic

The volcano beneath this calm-looking lake has grown restive, inspiring a rare collaboration between Chinese and Korean scientists

Drilling for natural gas has gotten ahead of the science needed to prove it safe

First hard evidence of seasonal dinosaur migration found in dental enamel.