Those numbers may not sound like a big deal until one reflects that average global temperatures were "only" 5 degrees cooler at the height of the last Ice Age.

— Jared Diamond Collapse: How Societies Choose to Fail or Succeed (2005)

More quotes by Jared Diamond

Collapse: How Societies Choose to Fail or Succeed (2005)

Collapse: How Societies Choose to Fail or Succeed (2005)

Why Is Sex Fun?: The Evolution of Human Sexuality (1997)

Why Is Sex Fun?: The Evolution of Human Sexuality (1997)

Collapse: How Societies Choose to Fail or Succeed (2005)

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