Ohio State’s Environmental Film Series continues tonight with “Plains” and “Forests.” Both are episodes from the PBS series “Earth: A New Wild.” Rebecca Swab, director of restoration ecology at The Wilds in Cumberland, Ohio, and Peter Curtis, professor in Ohio State’s Department of Evolution, Ecology and Organismal Biology, will lead the discussion afterward. Get details. (Fan of “Earth: A New Wild”? Read this.) (Image: PBS.)