A Tale of Two Platners
Ice melting at the poles turns into water. Earth’s spin causes centrifugal force, sending that water towards the equator. Adding mass to that region slows the rotation of the Earth. That’s pretty straightforward. It’s basic physics. Ice Capades skaters have been demonstrating that effect for years: arms in, faster spin. Scientists recently figured out how to compare current trends with far earlier times. A newly-published paper says Earth is now slowing at an “unprecedented” rate—greater than at any time in 3.6 million years. Good luck, though, convincing your MAGA uncle that days are getting longer because of climate change. Man-made greenhouse gas emissions have the …