Can tropical tectonic activity trigger ice ages?

“We think that arc-continent collisions at low latitudes are the trigger for global cooling,” says Oliver Jagoutz, an author of the study. “This could occur over 1- 5 million square kilometers (0.4 to 1.9 million sq mi), which sounds like a lot. But in reality, it’s a very thin strip of Earth, sitting in the right location, that can change the global climate.”

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