Contributions to historical climate change have varied substantially among nations. These differences reflect underlying inequalities in wealth and development, and pose a fundamental challenge to the implementation of a globally equitable climate mitigation strategy. This Letter presents a new way to quantify historical inequalities among nations using carbon and climate debts, defined as the amount by which national climate contributions have exceeded a hypothetical equal per-capita share over time.

Ancient DNA analysis has revealed the safe havens where New Zealand seabirds found sanctuary from early human hunting.

Extinction events typically represent extended processes of decline that cannot be reconstructed using short-term studies. Long-term archives are necessary to determine past baselines and the extent of human-caused biodiversity change, but the capacity of historical datasets to provide predictive power for conservation must be assessed within a robust analytical framework.

All around the deserts of Utah, Nevada, southern Oregon, and eastern California, ancient shorelines line the hillsides above dry valley floors, like bathtub rings — remnants of the lakes once found

This is according to a new study that claims the earliest civilisations in the Middle East and Fertile Crescent felt the impact of rapid global warming.

Scientists may have uncovered the first evidence of farming in the Mideast.

On Aug 31, 1665, Samuel Pepys noted dolefully in his diary: “Thus this month ends, with great sadness upon the public through the greatness of the plague, everywhere through the Kingdom almost. Every day sadder news of its increase. In the City died this week 7496; and of them 6102 of the plague.

Ancient DNA may shed some light on how past environments impacted ancient human populations.

Scientists are learning a bit more about prehistoric climate change.

We have examined a 5th to 6th century inhumation from Great Chesterford, Essex, UK. The incomplete remains are those of a young male, aged around 21–35 years at death. The remains show osteological evidence of lepromatous leprosy (LL) and this was confirmed by lipid biomarker analysis and ancient DNA (aDNA) analysis, which provided evidence for both multi-copy and single copy loci from the Mycobacterium leprae genome.

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