The Midcontinent Rift is a giant tear that formed in what is now the U.S. Midwest 1.1 billion years ago. Nicknamed North ...

Between 100 and 1450 CE, they constructed 1,000 miles of canals – the largest system of waterways in the Americas north of Peru ... trial and error, these ancient river people accumulated ...

The scientists have called this new population the Ancient Beringians ... time the movement of ancient people from Asia to North America to a much earlier date. Their analysis suggested Ancient ...

they’re one of North America’s largest recognised Indigenous tribes, along with the Cherokee. Donovan has arranged a hike in Canyon de Chelly — an ancient valley inside the reservation that ...