Fossilized footprints in Saudi Arabia show human traffic on the cusp of a subsequent ice age. Like carbon dating, scientists use isotopes and context clues to calculate the approximate age of fossils.

Thousands of ancient footprints stretch for miles across New Mexico’s White Sands National Park, capturing moments when Ice Age humans encountered now-extinct beasts, including mammoths and enormous ...

Scientists have discovered the oldest human footprint ever unearthed in the Middle East. The remarkably well-preserved footprints, embedded in an ancient mudhole, suggest human presence in the region ...