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Ancient shell growth rings show days were 30 minutes shorter millions of years ago

Scientists have found that millions of years ago, near the end of the reign of the dinosaurs, the Earth turned much faster than it does today. At that time scientists say that the Earth rotated 372 times per year compared to the current 365. The information comes from a new study of fossilized mollusk shells from the Late Cretaceous. The … Continue reading

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