Back in the late '60s and early '70s, Stanford-trained environmentalist Stewart Brand was the driving force behind "The Whole Earth Catalog," the printed counterculture catchall packed with DIY, eco-friendly notions now looked back on as a blog that predated the Internet. This documentary portrait considers Brand's legacy and spotlights the man today, still a free thinker and advocate for applying modern science to the revivification of lost species.