Anonymousabout 2 hours ago
Earth's rotation is undergoing two simultaneous and opposing changes: a short-term acceleration driven by liquid core dynamics that may require the first-ever negative leap second, and a longer-term climate-driven slowdown from glacial melt that is lengthening days at a rate not seen in 3.6 million years. The tension between these forces has placed global timekeeping infrastructure — from GPS satellites to financial trading platforms — on uncertain footing as the world approaches a 2035 deadline to overhaul the leap second system entirely.