Twin boys pulled from California pool, one dies and other critical.

A 4-year-old boy died and his twin brother remains in critical condition after they were found unresponsive in a pool in Porter Ranch, California. The incident was reported at a home on Friday morning, and the brothers were rushed to the pediatric trauma center at Northridge Hospital. The cause of the incident is believed to be an accident, and officials are urging pool owners to take safety precautions, including having a water supervisor, erecting proper barriers, and learning CPR.