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Story summary
- Earth's rotation is slowing due to human-induced climate change, lengthening days by about 1.33 milliseconds per century.
- Scientists from the University of Vienna and ETH Zurich say melting polar ice sheets redistribute mass and affect Earth's spin.
- The study notes this rate is not seen in the past 3.6 million years and warns that even small day-length changes can disrupt GPS and satellite navigation.
