Biggest ever UK dinosaur footprint site discovered 英国发现境内最大的恐龙脚印 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
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俄副外长：乌加入北约意味着无法实现和平
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Most rainforests too degraded to provide good habitats 多数雨林退化严重而无法为 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.