A boy (3) died in what the police called a "tragic drowning" in California. Kai Burnaby and his twin brother Liam were found unconscious in the backyard pool of the family's Los Angeles home.The twins' parents performed CPR on them before they were taken to the hospital.Kai was pronounced dead at the pediatric trauma center at Northridge Hospital, while his brother continues to fight for his life, the Daily Mail reports.Authorities...