Thousand Oaks' Arbor/Earth Day celebration on Saturday marked many milestones since its genesis in 1997, when the population was 112,000 compared to 130,000 today. In the past two decades, the city’s open space has grown from 13,000 acres to 15,000 acres, and 70 miles of trails have doubled to 150 miles.
Claudia Bill-de la Peña, the mayor of Thousand Oaks, talked about these accomplishments during opening ceremonies of this year's celebration at Thousand Oaks Community Park.