1423: Why are we changing the way we keep time?

Podcast: Science Friday · Science Friday

Opublikowano: 2026-10-24

The time we see on our phones and clocks is based on the Earth’s rotation. But that rotation speed varies, so if it speeds up or slows down, our time measurements get thrown off. To solve this problem, timekeeping scientists have been deploying leap seconds to keep our clocks aligned with our planet. That is, until last week. After decades of debate, a global committee of timekeepers voted to kill the leap second. Host Flora Lichtman speaks to journalist Emma Gometz, who reported on the change for Scientific American, and physicist Judah Levine, to understand why this decision is a b...