Ans. Yes, there are earthquake warning systems that have been developed and implemented in several countries. These systems use networks of seismometers to detect the initial P-waves of an earthquake, which travel faster than the more damaging S-waves and surface waves. By analyzing the P-wave data, warning signals can be sent to alert people in advance, giving them a few seconds to minutes to seek safety. However, the effectiveness and availability of such systems vary across different regions.