Botany of Desire

I'm watching the PBS video version of Michael Pollans great book from several years ago"The Botany of Desire".Not to be missed.It's almost as good as the book was reading it the first time.In case anyone doesn't know Pollan took four plants,Apples,Tulips,Marijuana and Taters and detailed their origins and how they manipulated animals and humans into spreading them and using them.Fascinating to watch.