The third, free community showing of the National Geographic Channel film about climate change around the world, “Before the Flood,” will be in the First Presbyterian Church basement, 73 W. Winter St., at 2 p.m. Saturday, Jan 21.

The film will be followed by a moderated discussion about this complex issue.

The moderator for this third discussion will be Sharlee Murphy. Murphy is a retired educator and counselor. She taught mathematics for 16 years in the Delaware City Schools and then became a counselor, working in elementary and middle schools.

She created and facilitated for 15 years, “For the Children,” a county-wide program for parents who are divorcing, sponsored by the court system.

For her last eight years, she was a professional counselor in private practice in Delaware. Murphy spends her time with family and friends, traveling, enjoying and learning from nature and working to preserve it.

For two years the “Before the Flood” camera crew traveled around the world, visiting five continents and speaking with scientists, world leaders, environmental activists and local residents about apparent climate change in their midst, while visually recording the evidence, a news release states.

This film and moderated discussion is the third of four public showings of this film in the First Presbyterian Church on Saturdays in January.

The last show will be Saturday, Jan. 28 at 7 p.m.

The film showings and moderated discussion are co-hosted by the Earth Care Team of the First Presbyterian Church, Delaware Citizens’ Climate Lobby and Sustainable Delaware.