I'm way late on this...
Stewart R. Mott, the eccentric son of Charles Mott, died on June 13. In addition to supporting numerous progressive causes, Stewart was known for "cultivating a large garden atop his Manhattan penthouse, complete with 460 plant species (including 17 types of radishes) and a chicken coop," according to his New York Times obituary by Douglas Martin.
New York Times Video Obituary/Part 1
New York Times Video Obituary/Part 2