上周，中国公司 DeepSeek 发布了一款名为 R1 的大型语言模型，震惊了美国科技行业。R1 不仅能与本土竞争对手相媲美，而且成本仅为其一小部分，而且免费提供。美国股市因此损失了 1 ...

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

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.