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Snowball Earth theory says entire earth was covered in an ice sheet dozens of miles high. There might have been a ring around the equator of unfrozen water or s
by hoorayimhelping 8y ago
Snowball Earth theory says entire earth was covered in an ice sheet dozens of miles high. There might have been a ring around the equator of unfrozen water or slush.
It seems very hard for life to survive under those conditions, let alone complex life, let alone advanced life / civilizations.
- daveFNbuck 8y agoThe article also mentions that the ice scraped away 1.9 to 3.1 miles of crust, so this period includes a lot of time before snowball Earth.