Hey there, it's Kathy. I just wanted to let you know that you can listen to History of the 90s

early and ad-free on Amazon music included with Prime. It's been 30 years since FBI agents

finally captured the man who mailed more than 16 bombs to unsuspecting victims in the United States,

killing three and injuring 23 others. For two decades, officials searched

for the elusive terrorist known as the Unabomber. His victims appeared random, his motives unclear,

and the only sighting of him resulted in a now-famous composite drawing of a man in a hoodie

with aviator sunglasses.

Today, we're revisiting an episode of History of the 90s that explores the investigation and capture of the mystery man. We'll be back in two weeks with a brand new episode.

Until then, here is the long hunt for the Unabomber.

In May 1978, a package wrapped in a brown paper bag was found on the campus of Chicago's

Northwestern University.

The return address listed Northwestern Engineering Professor Buckley Christ, so school

officials returned the package to his office.

Professor Christ was confused, though, and a little bit suspicious, because he had never seen

this package before. Chris gingerly cut away the paper wrapping and found a hand-crafted wooden box.

Inscribed on the box was the word open.

Christ immediately called security.

Off-duty police officer Terry Mark responded.

He turned the box over in his hands and then decided to open it.

As he did, it exploded with a thundering boom.

Inside the box was a nine-inch piece of pipe packed with explosive powder rigged to ignite with matchheads,

a primitive bomb, and despite the big bang, it was a dud.

...