Deserts are diverse ecosystems that occur on all seven continents. Learn about the four major types of deserts, the surprising amount of wildlife some of them contain, and how new desert areas are beginning to form.
Traveling for 64-miles along the border between Chama, New Mexico and Antonito, Colorado, the Cumbres & Toltec Scenic Railroad chugs its way up and over the 10,015 foot high Cumbres Pass.
Cities of the 19th century were breeding grounds for disease. Find out how poor living conditions played a role and how the discovery of the germ led to public health reforms still seen today.
