Los Angeles had oil wells pumping in its neighborhoods when Hollywood was in its infancy, and thousands of active wells still dot the city. These wells can emit toxic chemicals such as benzene and other irritants into the air, often just feet from homes, schools and parks. But now, after nearly a decade of community organizing and studies demonstrating the adverse health impacts on people living nearby, Los Angeles' long history with urban drilling is nearing an end. https://phys.org/news/2022-02-los-angeles-history-urban-oil.html