Unabomber Ted Kaczynski dies in prison at 81.

Ted Kaczynski, the Harvard-trained math professor who became known as the "Unabomber" for his deadly bombing campaign, has died at the age of 81. Kaczynski had been serving eight life sentences after pleading guilty in 1998 for sending mail bombs that killed three people and wounded 23 others from 1978 to 1995. He was found unresponsive in his cell at the Federal Medical Center in Butner, North Carolina, and was transported to a local hospital where he was pronounced dead. Kaczynski's family claimed his writings reflected the mind of a paranoid schizophrenic, and a federal prison psychiatrist agreed, leading to a plea bargain that saved him from the death penalty.