Leap seconds have helped keep clocks synchronized with Earth’s rotation, but their time is now over – here’s why
300 glaciers have disappeared from the American West since the mid‑20th century – the survivors have a few things in common
Read More 6 minute read Math and the Sciences Leap seconds have helped keep clocks synchronized with Earth’s rotation, but their time is now over – here’s why Vahe Peroomian, USC Dornsife College of Letters, Arts and Sciences You’re probably used to the month of February… byVahe PeroomianOctober 21, 2026