15 We've been here before and not that long ago. Gunnar Heinsohn on volcanic and non-volcanic activity behind the collapse of Northern Europe around 1000 AC (www.academia.edu) posted 3 years ago by kula 3 years ago by kula +16 / -1 6 comments share 6 comments share save hide report block hide replies
I've been wondering about this recently - millions of years is a looooooooong time - who's to say we literally haven't done this all before?