Global Cooling: The Real Climate Threat
In
central Europe, for example, temperature changes since 1990 coincided
more with the changes in solar activity than with atmospheric CO2
concentration. The same has been true globally, and across centuries.
The Maunder Minimum (1645–1715) and Dalton Minimum (1790–1830) — periods of low solar activity — were responsible for the coldest periods of the Little Ice Age. England's River Thames froze. Whole civilizations collapsed as people starved because cold-induced poor harvests led to malnutrition that made people too weak to resist disease. Likewise, increased solar activity in the Roman Warm Period (~250 B.C. to A.D. 400) and Medieval Warm Period (~A.D. 950–1250) brought warmer temperatures on Earth, and thriving crops led to greater nutrition and lower mortality rates.
The Maunder Minimum (1645–1715) and Dalton Minimum (1790–1830) — periods of low solar activity — were responsible for the coldest periods of the Little Ice Age. England's River Thames froze. Whole civilizations collapsed as people starved because cold-induced poor harvests led to malnutrition that made people too weak to resist disease. Likewise, increased solar activity in the Roman Warm Period (~250 B.C. to A.D. 400) and Medieval Warm Period (~A.D. 950–1250) brought warmer temperatures on Earth, and thriving crops led to greater nutrition and lower mortality rates.
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