How Android phones became an earthquake warning system
If you're the owner of an Android phone and live in a seismically active region, there's a chance your phone has popped up an unusual warning. Not one that asks for permission to share personal information, or potential malware, but something far more serious: There's an earthquake nearby, and you have up to a minute or two to get to a safer location. Starting in the US in 2020 and expanding internationally since, the system is called Android Earthquake Alert (AEA), and it's on by default in mo