The UN agenda 21 wanted to reduce world population by 85% while Ted Turner wanted to have 95% less population.
I still think Ted was most likely the guy behind the Georgia Guidestones. I still havent done that road trip, Id still like to see them. So creepy.
American Stonehenge: Monumental Instructions for the Post-Apocalypse
https://www.wired.com/2009/04/ff-guidestones/