Volcanoes in Human History: The Far-Reaching Effects of Major Eruptions.

Earthquakes in Human History: The Far-Reaching Effects of Seismic Disruptions

The Cycle of Cosmic Catastrophes: How a Stone-Age Comet Changed the Course of World Culture

Earthquakes in Human History: The Far-Reaching Effects of Seismic Disruptions

Eruptions that Shook the World

Collapse: How Societies Choose to Fail or Succeed: Revised Edition

Collapse: How Societies Choose to Fail or Succeed

Forbidden History: Prehistoric Technologies, Extraterrestrial Intervention, and the Suppressed Origins of Civilization