His stunning scramble up the 3,000-foot granite wall known as El Capitan, in less than 4 hours, came after meticulous planning and training.

On a decent Wi-Fi connection, the download-and-reboot routine should take roughly 10 to 15 minutes, but that may vary. When your iPhone powers back on, you'll be running the iOS 26 developer beta.

Lawrence Livermore National Laboratory's (LLNL) flagship exascale machine El Capitan maintained its status as the fastest supercomputer on the planet - claiming the No. 1 spot on not just one, but ...