The Long Summer: How Climate Changed Civilization - Paperback

How Climate Variability Shaped Human Civilization

The Long Summer: How Climate Changed Civilization by Brian Fagan examines the profound relationship between climate change and the development of human societies. This comprehensive work reveals how the Holocene warm period, beginning 15,000 years ago, created the conditions for all of recorded history and modern civilization.

Understanding the Holocene Climate Record

For over a century, scientists recognized that human evolution occurred during an Ice Age. As temperatures rose and glaciers receded, sea levels increased, creating new environmental conditions. This warm period, known as the Holocene, witnessed the rise of agriculture, cities, and complex societies. Until recently, detailed climate records from this period remained elusive. Fagan presents the newly available climate data, offering unprecedented insights into how temperature fluctuations influenced human development.

Climate as a Historical Force

This engrossing analysis demonstrates how climate functioned as what historian Paul Kennedy termed one of the "deeper transformations" of history. Fagan argues that climate variability played a more significant role in shaping civilizations than previously understood. The book connects environmental changes to major historical transitions, providing a framework for understanding human adaptation and societal collapse.