Gordon Fosty, retired from Chevron, will talk about how global warming is tracked. A buffet lunch and the program take place at Redwood Canyon Golf Course (17007 Redwood Road, Castro Valley) at 12:00-1:30 p.m. The cost of lunch is $20 and reservations must be made by 9:00 p.m. on Sunday, July 10, by contacting Rotary at cvrotary@iCloud.com or 510-402-5123. More information is available at castrovalleyrotary.org.