A story that has fascinated me for a long time may have some new evidence. Here's a brief overview if you are not familiar with the case (from the always reliable Wikipedia):
D. B. Cooper is a media epithet popularly used to refer to an unidentified man who hijacked a Boeing 727aircraft in the airspace between Portland, Oregon, and Seattle, Washington, on November 24, 1971. He extorted $200,000 in ransom (equivalent to $1,180,000 in 2016) and parachuted to an uncertain fate. Despite an extensive manhunt and protracted FBI investigation, the perpetrator has never been located or identified. The case remains the only unsolved air piracy in commercial aviation history
More can be read here.
Anyways, it looks like there may be some new evidence in the case.
Thomas Colbert, a TV and film executive who helped put together the team with his partner and wife Dawna, confirmed to Fox News that his group had uncovered what “appears to be a decades-old parachute strap.”
It's worth noting the FBI stopped investigating the case in July of 2016. Maybe this new evidence will help finally solve this mystery.
http://www.foxnews.com/us/2017/08/10/db-cooper-mystery-potential-physica...