D. S. Allan
D.S. Allan, a Cambridge M.A., is a science historian specializing in paleogeography, particularly in the Arctic regions. A science teacher for many years, he is a skilled cartographer and has made a special study of evidence for climatic and landform change in recent geological times. He lives in Basildon, Essex, England.
Books By D. S. Allan
Cataclysm!
By D. S. Allan, J. B. Delair
$27.99
Abundant evidence points to a great global catastrophe that occurred 11,500 years ago, indicating that a fateful confrontation with a destructive cosmic visitor must have occurred, and calling into question established geological theories about this moment in our not-so-distant past.