The Cosmic Influence on Ice Age Cycles.

A "warm ice age" that occurred approximately 700,000 years ago permanently changed the climate cycles on Earth, according to a study by a European research team. The study used geological data and computer simulations to identify the connection between the warm and moist period and the expansion of polar glaciers. The change in climate cycles occurred in the Middle Pleistocene Transition period, which began approximately 1.2 million years ago and ended about 670,000 years ago. The study sheds light on the mechanisms responsible for the critical change in the global climate rhythm.