00482nam a2200097Ia 4500 170517s9999 xx 000 0 und d Earth in 1000 Years Each glacial period is followed by an interglacial period in which temperatures rise and the ice retreats. The Milankovitch cycles are not strong enough by themselves to cause the shift. What they do is get the ball rolling. A... Science. http://topdocumentaryfilms.com/earth-1000-years/ 334201 334201 0 0 0 CL CL 2017-05-17 0 2017-05-17 00:00:00 2017-05-17 DF