Earth was a 'water world' with a global ocean three billion years ago, study finds

[السياسي]

Harvard scientists say Earth's mantle was four times hotter some 3 billion years ago, which would inhibited minerals from holding water - resulting in a global ocean that engulfed the planet.

https://www.dailymail.co.uk/sciencetech/article-9372563/Earth-water-world-global-ocean-three-billion-years-ago-study-finds.html?ns_mchannel=rss&ito=1490&ns_campaign=1490 ]قرااء المزيد ..... [/url]