Google alerts offer quick, cheap earthquake warnings.

The article discusses the effectiveness of Google's earthquake early warning system, which is embedded in Android phones, particularly in the context of the devastating 2023 Turkey-Syria earthquake. On February 6, 2023, the system alerted over half a million users to the impending quake and millions more to aftershocks, although some alerts were issued after shaking had already begun. The system, which utilizes accelerometers in smartphones to detect seismic activity, has shown operational successes but also faced challenges, prompting updates to its algorithms for improved performance. Experts emphasize that while the system can supplement existing networks, it should not replace dedicated earthquake alert systems, and there are concerns regarding data accessibility and the need for improved building safety to mitigate earthquake risks. [Extracted from the article]