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The 17th annual Environmental Film Festival kicks off tomorrow, presenting 136 films of various lengths and genres that “provide fresh perspectives on environmental issues facing our planet.”

Did I mention that some of them are free? First up is Creeping Critters!, a children’s program of four shorts that will be will screened at a selection of Washington libraries at 1 p.m. Wednesday and Thursday, this week and next.

Also on the agenda is a retrospective of 11 Werner Herzog films, including last year’s Oscar-nominated Encounters at the End of the World.

For more information and a full schedule, visit D.C. Environmental Film Fest.