科技圈🎗在花频道📮 | Telegram Webview: TestFlightCN/31896 -

科技圈🎗在花频道📮

1900名美国院士拉响警报：科研界遭遇"特朗普风暴"

当地时间3月31日，众多美国顶尖科学家在网上发出了一封公开信：呼吁特朗普政府停止对美国科学的全面攻击。

这封公开信由来自医学、流行病学、心理学、气候科学、社会学和经济学等领域的13位科学家起草。签名科学家均为美国国家科学院、工程院和医学院的成员，其中包括Harvey J. Alter、Francoise Barre-Sinoussi、Reinhard Genzel、Edvard I. Moser、May-Britt Moser等十多位诺奖得主。

院士们警告，美国可能丧失在医疗创新、清洁能源等领域的领导地位，他国民众健康水平与经济实力将全面超越美国。与此同时，哥伦比亚大学等政府盯上的院系，面临联邦资金断供威胁，凸显高校独立研究空间遭挤压。

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Create: 2025-04-02
Last Update: 2025-05-05 22:40:34

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Should I buy bitcoin?

“To the extent it is used I fear it’s often for illicit finance. It’s an extremely inefficient way of conducting transactions, and the amount of energy that’s consumed in processing those transactions is staggering,” the former Fed chairwoman said. Yellen’s comments have been cited as a reason for bitcoin’s recent losses. However, Yellen’s assessment of bitcoin as a inefficient medium of exchange is an important point and one that has already been raised in the past by bitcoin bulls. Using a volatile asset in exchange for goods and services makes little sense if the asset can tumble 10% in a day, or surge 80% over the course of a two months as bitcoin has done in 2021, critics argue. To put a finer point on it, over the past 12 months bitcoin has registered 8 corrections, defined as a decline from a recent peak of at least 10% but not more than 20%, and two bear markets, which are defined as falls of 20% or more, according to Dow Jones Market Data.

The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.