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Ice age cycles explain why the Earth cools, warms, and whether another freeze is coming

While the Milankovitch Cycles operate on timescales far longer than human lifespans, their effects are always at play.
news.ucsb.edu

Scientists match Earth’s ice age cycles with orbital shifts

Beginning around 2.5 million years ago, Earth entered an era marked by successive ice ages and interglacial periods, emerging from the last glaciation around 11,700 years ago. A new analysis suggests ...