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 4 minute read Earth The ocean can look deceptively calm – until it isn’t. Here’s what ‘hazardous surf’ really means Samuel Cornell, UNSW Sydney Over the Easter weekend, seven people drowned along the Australian coast. Most were swept… bySamuel CornellMay 11, 2025