Colonisation of the Americas at the end of the 15th Century killed so many people, it disturbed Earth’s climate, suggests a new study. European settlement led to abandoned agricultural land being reclaimed by fast-growing trees that removed enough CO₂ to chill the planet, the “Little Ice Age”.

Colonisation of the Americas at the end of the 15th Century killed so many people, it disturbed Earth’s climate, suggests a new study. European settlement led to abandoned agricultural land being reclaimed by fast-growing trees that removed enough CO₂ to chill the planet, the “Little Ice Age”.
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