<span style="color: #222222;">In the Southern US, at least 12 people have been killed following heat-related incident in Texas and Louisiana as extreme temperatures continue to plague the country. Eleven of the Texas heat-related deaths happened in under two weeks in Webb County, which includes Laredo, Dr. Corinne Stern, the county's medical examiner, said. The dead ranged in age from 60 to 80 years old. <br />''<br />''Hundreds of   Texas residents have been sent to emergency rooms, breaking previous records. </span><br />