By Tamara Jager Stewart For decades archaeologists have sought to understand what they refer to as the Salado Phenomenon, which occurred between roughly A.D. 1275...

By Paula Neely Searching for gold and other riches, Spanish conquistador Hernando de Soto landed in Florida in 1539 and launched a four-year exploration of...

By Mike Toner Archaeologists have been discovering ruins of ancient civilizations in the jungles of Mexico and Central America for 200 years, filling libraries with...

By David Malakoff Nearly twelve hundred years ago, one the largest volcanic eruptions to strike North America in millennia rocked the landscape of what is...