Researchers at Swiss university ETH Zurich have shown how climate change is altering the length of a day. The planet's mass becoming more oblate due to melting polar ice caps and flowing water into oceans is causing the Earth to spin more slowly, making days lengthen by milliseconds.
Between 0.3 and 1 millisecond per century was added between 1900 and 2000, accelerating to 1.3 milliseconds per century as the ice sheets in Greenland and Antarctica shrink faster. This impacts our daily routines and computer systems as the Earth's rotation changes slightly.
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