21.6 – 20.6 thousand years ago Glacial periods within the present Ice Age start gradually and end rapidly. The last glacial period began around 90 thousand years ago, and reached its peak, the Last Glacial Maximum (LGM), around 20 thousand years ago. During the LGM most of Northern Europe and northern North America were under […]| Logarithmic History
833 – 789 thousand years ago Around today’s date, there was a shift in the nature of glacial cycles. But let’s back up a bit. Earth’s climate took a turn toward cool in the transition from Eocene t…| Logarithmic History