The Environmental Change-Makers of Westchester and Transition Los Angeles will present “Life After Oil,” a one-day mini-conference addressing the effects of the end of “easy oil” on communities and what it takes to transition to post-petroleum lifestyles.

The event is scheduled from 8 a.m. to 5 p.m. Saturday, Sept. 25 at the Holy Nativity Church community hall, 6700 W. 83rd St., Westchester.

Participants at the “Life After Oil” conference will learn about “peak oil” and its forecasted effects on society, as well as the impacts of economic contraction and climate change.

Participants will also learn what communities across the U.S. and around the world are beginning to do to prepare and they will meet with activists from throughout the greater L.A. basin. Together they will discuss potential scenarios for the coming years and how to prepare local neighborhoods.

“Peak oil is the understanding that our planetary oil supply is finite, and that we’re currently burning our way into the second half of that planetary supply,” said David J. O’Reilly, chairman and CEO of Chevron Oil. “We’ve already used up the cheap, easy-to-get-to stuff, so this second half will come with much higher cost, competition, and conflict. One thing is clear: the era of easy oil is over.”

Admission to the meeting is $35 and includes a vegetarian buffet lunch. Online pre-registration is required.