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Donald Trump has spent much of his second term at war with science and scientists. He is cutting staff at institutions such as the Environmental Protection Agency (EPA) by a third, and has cancelled or frozen up to 8,000 federal research grants. This hasn’t just hurt individual research programmes, it has damaged America’s credibility as a reliable partner in the scientific community. It is not surprising that many researchers – one poll last year by the journal Nature gave the number of 75% – say they are considering leaving the US entirely.，更多细节参见im钱包官方下载
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Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00620-x。搜狗输入法下载对此有专业解读
2月28日，比特币快速下挫1000美元，日内跌2.5%，现报64400美元。（每经网）原文链接下一篇AWS与OpenAI联合开发“有状态运行时环境”，预计数月内推出当地时间2月27日，亚马逊网络服务公司（AWS）表示，正在与OpenAI联合开发一种“有状态运行时环境”（Stateful Runtime Environment），该环境将允许AI智能体保留上下文语境并访问计算资源等。其预计将在未来几个月内推出。（界面）
The East Midlands, Yorkshire and The Humber, and south-east England are particularly at risk.