What is it this time? Global slowing?
It has long been known that natural phenomena on Earth’s surface, such as tides and winds, affect its rotation speed. Now scientists are investigating how events in a mineral layer at the core-mantle boundary, 1,615 miles (2,600 kilometers) deep, similarly affect the planet’s spin.
“The length of a day … is changing due to the interaction between the mantle and the core in the very deep Earth,” said study co-author Kei Hirose, a geoscientist at the Tokyo Institute of Technology in Japan. “This is basically because the bottom of the mantle has very high electrical conductivity.”
Finally, a reasonable argument for Daylight Saving.
(Via Scribal Terror.)