Theodore John Kaczynski (born May 22, 1942), known as the Unabomber, is an American domestic terrorist and former mathematics professor. He was a mathematics prodigy, but abandoned his academic career in 1969 to pursue a primitive life. Between 1978 and 1995, he killed three people and injured 23 others in a nationwide bombing campaign against people that he believed to be the destruction of the environment by advancing modern technology.

The family moved to Evergreen Park, Illinois where Ted transferred to Evergreen Park Central Junior High School. After testing, his IQ was 167 well above a genius, he skipped the sixth grade. He later described this as a pivotal event: previously he had socialized with his peers and was even a leader, but after skipping ahead of them he felt he did not fit in with the older children, who bullied him.

In 1971, he moved to a remote cabin without electricity or running water near Lincoln, Montana, where he lived as a recluse while learning survival skills to become self-sufficient. He witnessed the destruction of the wilderness surrounding his cabin and concluded that living in nature was becoming impossible. He resolved to fight the industrialization and its destruction of nature through terrorism, beginning his bombing campaign in 1978.

After his arrest a plea bargain was reached under which he pleaded guilty to all charges and was sentenced to eight consecutive life terms in prison without the possibility of parole.

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