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Earth’s day was only 19 hours long for a billion years, study finds

Researchers from the Institute of Geology and Geophysics at the Chinese Academy of Sciences and Curtin University in ...
CNN

Earth’s core has slowed so much it’s moving backward, scientists confirm. Here’s what it could mean

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...