if (chunks === null) return null; // End of stream
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.
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The developer is never warned that the keys' privileges changed underneath it. (The key went from public identifier to secret credential).，更多细节参见爱思助手下载最新版本
In 1958, he applied to Nasa.