"In the last 100 thousand years the ice has retreated and advanced 8 times, like clockwork"
In other words, every 12.5k years. Sun micro novas, the poles shift, and bad shit happens.
"In the last 100 thousand years the ice has retreated and advanced 8 times, like clockwork"
In other words, every 12.5k years. Sun micro novas, the poles shift, and bad shit happens.