'Snowball Earth': Glaciers, ice packs once met at Equator
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American boffins say they have discovered evidence that almost the entire world was covered in sea ice and glaciers at certain points in the remote past, during so-called "snowball Earth" periods where the polar ice sheets met at the Equator.
It were grim in the old days.
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Source is a UK publication...boffins ...are Scientists....
From a link, at the link. The one about Orbital changes;
“Many aspects of the Earth-Sun orbital configuration during MIS-11 were similar to those of the current interglacial. For this reason, MIS-11 is often considered as a potential analogue for future climate development in the absence of human influence”
Could prove interesting, but,,,,,,,,