Scientists at Britain’s University of Sussex have discovered that an ancient part of Siberia’s permafrost is far more resilient to heat than once thought, having survived temperatures as much as 4–5°C (39–41°F) warmer than today.
The university researchers also discovered that the ancient permafrost, known as the Batagay megaslump, is at least 650,000 years old, making it the oldest recorded in Eurasia.
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