title: From Internal Combustion to Electricity.
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D001336:Automobiles / Q000266:history; D002140:California; D004560:Electricity; D049673:History, 20th Century; D006801:Humans; D011634:Public Health; D012905:Smog
chemical_list: D000393:Air Pollutants; D012905:Smog