NATURE is one of PBS’ longest-running series for good reason. Unlike other PBS science series, Nature focuses not on inventions or innovations but on the natural world itself, inviting viewers to travel all over the world with scientists and filmmakers. Subject areas including biology, geology, and meteorology are explored via beautifully filmed documentaries shot in locations most of us will never see. In presenting a comprehensive look at its subjects, Nature highlights the positive (animals’ family and community life) but doesn’t shy away from the ugly. Graphic images of animals being slaughtered can crop up.