Ted Kaczynski , also known as the Unabomber, became one of the nation’s most notorious domestic terrorists after carrying out a lengthy nationwide bombing campaign. Over the course of nearly two decades, beginning in the late 1970s, Kaczynski sent homemade explosive devices, targeting universities, airlines, and others he deemed responsible for advancing technology.

Long before the bombings, however, Kaczynski participated in a controversial experiment at Harvard University, during which he was subjected to intense psychological stress and verbal abuse. The new Netflix film Unabomber explores this chapter of his life, offering a fictionalized retelling of his journey from child math prodigy to cold-blooded killer.

Here’s what you should know about the real Ted Kaczynski and his crimes as the Unabomber.

What Happened to Ted Kaczynski at Harvard?

Ted Kaczynski excelled academically from an early age, skipping two grades and gradating high school earlier than his peers.…