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 5 minute read Nature Parrotfish support healthy coral reefs, but they’re not a cure-all, and sometimes cause harm Rainbow and midnight parrotfish feed at Alacranes Reef in the Gulf of Mexico. Lorenzo Alvarez-Filip, CC BY-ND Lorenzo… byLorenzo Alvarez-FilipMarch 10, 2025