Waxing and waning prairie: New study unravels causes of ancient climate changes

A new study from the University of Helsinki has provided a compelling new explanation for the devastating droughts that took place in North America thousands of years ago. This period, known as the Holocene, covers the time of a generally warm climate following the last ice age. These exceptionally long-lasting droughts had drastic impacts on forest dieback and ecosystem transformations; understanding their causes is essential to improving societal resilience to future climate variations.

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