The newspaper comic strip “Arctic Circle,” by the environmentally minded cartoonist Alex Hallatt, is about talking penguins and their fellow creatures living in the north. Starting Monday, under a caption that says “An Inconvenient Truth,” the menagerie will find their world shrinking and their conversations will be about global warming.

Readers will see the drawings diminish to nothing by Friday as a snow bunny muses, “Climate change will lead to habitat loss and the extinction of many species.”

Miss Hallatt created the strips to observe the arrival of the documentary “An Inconvenient Sequel: Truth to Power,” in theaters on Friday. The film is a follow-up to the 2006 Oscar-winning documentary featuring Al Gore. Miss Hallatt has no official connection to the film.

“I was so excited when ‘An Inconvenient Truth’ was the success it was,” she said during a telephone interview. “Finally, finally climate change was now in the mainstream. In the intervening 10 to 11 years, it seems like we’re almost going backwards. It’s really, really frightening.”