Tweet on Monday, November 15, 2010 5:26 PM, updated: November 15, 2010 at 5:26 pm ADVERTISEMENT Organizers of the East Aurora Cooperative Market, a group trying to start a member-owned East Aurora food center, has scheduled a presentation by nutritional biochemist Colin Campbell. Campbell, professor emeritus at Cornell University, co-authored "The China Study," which explores links between diet and diseases such as cancer. He will speak on "Why Is Food and Health So Confusing?," according to Terence O'Brien, education director. His appearance was arranged by the East Aurora Cooperative Market, a group trying to establish a food co-op in East Aurora. Its members have established a website, eacoop.com, and are trying to sign up 1,000 members for a prospective 2012 opening. The first 500 memberships are set at $150, with the rest to go for $200. The lecture will be at 2 p.m. Sunday, Nov. 21, in the East Aurora High School auditorium, 1003 Center St., East Aurora. Admission is $10 co-op members, $12 others.