在 “MethaneSat” 问世之前，环境保护基金（EDF）必须通过地面和飞机进行甲烷读数以测量气体泄漏。这项艰巨的工作带来了惊人发现：2012年至2018年间，美国的甲烷排放量实际上比环境保护局的估算高出60%（https://www.edf.org/climate/methane-studies）。

美国稀土公司 (USA Rare Earth, Inc.) (NASDAQ: USAR )目前市值为9.32亿美元，市盈率高达96倍，该公司宣布首席运营官Steve Ridge已于周五立即从公司退休。公司通过向美国证券交易委员会提交的文件披露了这一变动。

For the first time, scientists obtained the ancient magnetic field information from the far side of the moon, revealing a possible rebound in the moon's magnetic field intensity around 2.8 billion ...

Astronauts Cai Xuzhe, Song Lingdong and Wang Haoze are in good physical and mental health and their medical examination results are all normal. Their muscle strength, endurance and exercise ...