Join us as we see what's growing along a short, polluted stretch of a world-famous river surrounded on both sides by concrete and train tracks. Though the Grizzly Bears may be long gone, quite a few native plants are still able to call the banks of this toxic waterway home. Along the way we'll see homeless camps, remnants of the world's largest piece of illegal graffiti, a half-assed crash course on c4 photosynthesis, headless pigeons and a wealth of industrial pollutants, as well as the direct descendants of some of the original photosynthetic inhabitants that were present when the Spanish first arrived 500 years ago, still calling this sunny and now smoggy city their home.
