The third annual Maine Literary Festival kicks off Friday, Nov. 7, at the Camden Opera House, under the banner of “For This Earth: Visions in Literature” — how writing, poetry, nature and science shape the way we live our lives and treat the Earth. The writers and poets featured at the festival this year include keynote speaker, Verlyn Klinkenborg, who will talk about rural writing; Ruth Reichl, editor-in-chief of Gourmet Magazine; and wildlife biologist, nature writer and part-time Maine resident Bernd Heinrich. That’s in addition to such Maine luminaries as Kate Braestrup, Kathleen Ellis, Gary Lawless, Candace Stover and Sandip Wilson. There are also several authors specializing in food writing, including James Beard award winner Michael Ruhlman, The New York Times food columnist Molly O’Neill and Melissa Kelly, executive chef for Primo in Rockland. The festival runs through Sunday, Nov. 9, with a special “Church Supper Redux” dinner set for Saturday night. For registration information, visit www.maineliteraryfestival.com.