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In a new study, scientists use the new “ostracod-clumped isotope thermometer” to reconstruct a much warmer Late Pleistocene/Early Holocene Mediterranean climate. Today’s average summer and winter temperatures are 22°C (21.4°C) and 8°C, respectively, at Central Italy’s Lake Trasimeno. Around 11,000-12,000 years ago, when CO2 hovered in the 220-230 ppm range, summer temperatures averaged 25°C, sometimes […]