Author and environmentalist Bill McKibben will come to San Luis Obispo on Oct. 30 to speak about social and environmental justice in a lecture titled, “Brave New Planet: The Fight for a Livable Climate.”

The event, sponsored by the Central Coast Clergy and Laity for Justice, will take place at the Fremont Theatre, 1025 Monterey St., beginning at 7 p.m. Doors open at 6:30 p.m.

McKibben has written several books, including “The End of Nature” and “Deep Economy.” His most recent book is “Eaarth,” spelled with two a’s.

McKibben founded the grassroots climate campaign 350.org  and has been called “the planet’s best green journalist” by Time magazine.

He is a scholar in residence at Middlebury College in Vermont and a fellow of the American Academy of Arts and Sciences.

His message, according to the Central Coast Clergy and Laity for Justice, is that “global warming is no longer a threat, but a reality. We’ve created a new planet, still recognizable, but fundamentally different. We’re going to have to learn to make our lives on a tough new planet.”

Organizers are asking for a $10 donation. Tickets are available online at http://www.ccc4justice.eventbrite .com or by calling 704-3356.