Feb. 7, 2025 — Researchers have analyzed the soft tissue from a fossilized plesiosaur for the first time. The results show that the long-necked marine reptile had both smooth and scaly skin ...

加密货币是一种数字形态的货币。他们属于数字资产，可用于购买商品和服务。加密货币也可储存价值、记账和作为交换中介。分布式账本(又称“区块链”)保障了这种数字资产的安全。第一个加密货币是比特币，中本聪(假名)创造了这种加密货币，并在2009年 ...

Dan Diamond is a White House reporter for The Washington Post. He was previously a national health reporter covering politics, policy and public health. He joined The Post in 2021 after covering ...