Dramatic droughts linked to the decline of the Classic Maya civilization approximately 800 to 1000 CE may not have required any external trigger, according to a new climate modeling study. Instead, they could have emerged from Earth's own natural climate variability—shifts within the climate system that, when aligned, are capable of producing prolonged dry periods on their own.

Dramatic droughts linked to the decline of the Classic Maya civilization approximately 800 to 1000 CE may not have required any external trigger, according to a new climate modeling study. Instead, they could have emerged from Earth’s own natural climate variability—shifts within the climate system that, when aligned, are capable of producing prolonged dry periods on their own.

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