This Saturday from one to two in the afternoon, I attended a native plant uses class, led by city naturalist Eric Nicholas. The class took place at our city’s new historic park, the Alviso Adobe Community Park . Located where Ohlone Indians once lived, where a dairy farm once ran, and displaying the Californio period of adobe brick, a historic building from 1854 and a newly built hall sit upon seven acres of land in the foothills. Old oak trees and a multitude of newly planted native plants are being naturally propagated and harvested under the expert guidance of Eric. I walked up to the main building and met Eric, a City of Pleasanton baseball cap on his head and a braid falling onto his back. No one else had arrived for the class, so Eric suggested I look at the Pleasanton Art League art show going on in the main building while we waited for more people to arrive. A few minutes later, I walked back to where Eric stood, talking with a mother and two elementary school boys. So the...