The most recent ice age peaked between 24,000 and 21,000 years ago, when vast ice sheets covered North America and northern Europe, and mountain ranges like Africa's Mt. Kilimanjaro and South America's Andes were encased in glaciers. At...

The evidence found at excavations at Cactus Hill in Virginia are pushing back the dates of the appearance of humans in the Western Hemisphere. Read about what has been found and the theories of how man reached the east coast of America...