The Pistachio is considered the most successful plant introduction to the United States in the 20th century. Up until then, they were a staple part of a diet that didn't stray far from western Asia and the Mediterranean. Though they've been a part of human life for thousands of years, their presence in the global market is just a few decades old. And even if you're at all familiar with how the western world perceives Iran, you may be surprised as to how much of an impact those relationships have affected this little green nut.Music is by Academy Garden (academygarden.bandcamp.com)Cover Art is by @boomerangbrit on InstagramScript Editing and Social Media is by Laurie Hilburn (lhilburn.journoportfolio.com)Follow me on Twitter and Facebook @MyFavoriteTrees and on Instagram @treepodcast