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Andrey Rudakov/Bloomberg via Getty Images The carbon emissions associated with mining bitcoin have accelerated rapidly in China, and they will soon outstrip the total annual emissions of mid-sized European countries. Analysis by Guan Dabo at Tsinghua University in Beijing, China, and his colleagues suggests that the total carbon footprint of bitcoin mining in China will peak in 2024, releasing around 130 million metric tonnes of carbon. Advertisement This figure exceeds the annual carbon emissions of countries including Italy and the Czech Republic. By 2024, bitcoin mining in China will requi...

Large-scale weather patterns and urban overheating make Sydney’s inland suburbs up to 10°C warmer than coastal areas during extreme heat events

Monash University Living structures that model early human embryonic development have been generated entirely from cells in the skin. The models mean it should be possible to study infertility, early miscarriage and early embryonic development without the controversial use of real human embryos – although the models may raise ethical issues of their own. Previously, the only means of studying the early development of human embryos was via blastocysts obtained from IVF procedures. Blastocysts are a ball-like early stage of embryonic development that is formed five days after fertilisation oc...

Colleter et al. Remains buried in two mass graves in the same cemetery in France have been identified as medieval soldiers belonging to opposing armies. Rozenn Colleter at the French National Institute for Preventive Archaeological Research and her colleagues have identified the skeletons as belonging to soldiers who fought in the Siege of Rennes in 1491. The skeletons were found buried in a cemetery outside the Jacobin Convent in Rennes. The researchers identified the skeletons by combining historical information with archaeological techniques, including genetic analysis. They found that �...

Cyril Ruoso/naturepl.com TO MANY people in the world’s more crowded quarters, nature seemed to breathe a sigh of relief during the first covid-19 lockdowns. As human activity subsided, herds of buffalo wandered along empty highways in New Delhi, and a kangaroo was seen bounding through downtown Adelaide, Australia. Mountain goats roamed through the seaside town of Llandudno, UK, munching on hedges and flowers. “Nature is healing” became a popular online refrain. “We got to see a window of what the world could be like if we allowed a bit more rewilding around us,” says Henrique Perei...