Arc Tangent

Separated from friends and family and haunted by personal demons, park ranger Anna Pigeon finds solace in the quiet ruins of the Anasazi civilization of Colorado's Mesa Verde. But the rugged beauty of the park and the mystery of the Anasazi are cruelly overshadowed by danger and death. Lately, visitors to Mesa Verde have been bringing home more than photos - they're also carrying a strange, deadly disease, and once it strikes, Anna Pigeon must find the very human source of the evil wind.

As soon as man discovered writing, he began engaging in historiography (historical writing and philosophy), but paleoanthropology only really began in the late 1800s. As archaeologists began finding bones in European caves of a human race that was very different than any race in the modern world, the study of paleoanthropology was born. The race of those early humans who were found in the European caves were later termed Neanderthals, and for quite some time, they were believed to have been the race from which many modern humans were directly descended.