The Rev. Jerry Falwell, a prominent conservative televangelist who founded a movement that helped mold the religious right into a political power, died Tuesday, his aide said. He was 73, Falwell was found unconscious in his office, said Ron Godwin, the executive vice president for Liberty University, which was founded by Falwell. Falwell was found unresponsive around 10:45 a.m. after he missed an appointment, and was taken to Lynchburg General Hospital. Godwin said he was not sure what caused the collapse, but he said Falwell "has a history of heart challenges." "CPR efforts were unsuccessful," said Godwin. He did not have any additional information on time or cause of death.