SciencefromNature1 day agoAncient 'snowball' Earth had frigidly briny seasSnowball Earth oceans were extremely cold (around −15 °C) and so highly saline that seawater remained liquid at subfreezing temperatures.
Sciencefromwww.theguardian.com5 months agoAbout 700m years ago, the Earth froze over entirely now we may know whyMassive volcanic eruptions combined with a cold climate contributed to Earth's Snowball Earth state 700 million years ago.