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Melting ice is slowing Earth's spin, shifting its axis and influencing its core
Two new studies suggest human behavior has changed foundational elements of the planet’s physical properties.
The studies, along with similar research published in March, suggest that humans have tinkered with foundational elements of the planet’s physical properties — a process that will continue until some time after global temperatures stabilize and the melting of ice sheets reaches an equilibrium. “You can add Earth’s rotation to this list of things humans have completely affected,” said an author of the two new studies, Benedikt Soja, an assistant professor of space geodesy at ETH Zurich in Switzerland. As for timekeeping, research published in March suggested that climate change has delayed the need to add a “negative leap second” to Coordinated Universal Time to keep the world’s clocks in line with Earth’s rotation.
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