Spirit Talk May 2015 Dr. Ardy Sixkiller Clarke vowed as a teenager to follow in the footsteps of two 19th-century explorers, John L. Stephens and Frederick Catherwood, who brought the ancient Maya cities to the world’s attention. Dr. Clarke set out on a seven-year adventure (from 2003 through 2010) through Belize, Honduras, Guatemala, and Mexico, […]