Time off from digital devices. Find out how a school in England challenges students to stay away from their gadgets ...

The existence of the Hsia, traditionally regarded as the first of China’s three great founding dynasties and one of the chief progenitors of Chinese civilization, has not only long been questioned but ...

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

▲摘要：在此，我们提供对世界自然保护联盟濒危物种红色名录的全球淡水动物的多分类评估结果。该项结果涵盖23496种十足甲壳类、鱼类和蜻蜓目昆虫，其中四分之一面临灭绝的威胁。普遍存在的威胁包括污染、水坝和取水、农业和入侵物种，过度捕捞也将导致物种灭绝。