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 History How pterosaurs learned to fly: scientists have been looking in the wrong place to solve this mystery Davide Foffa, University of Birmingham; Alfio Alessandro Chiarenza, UCL, and Emma Dunne, Friedrich-Alexander-Universität Erlangen-Nürnberg Ever since the first… byDavide FoffaJuly 2, 2025