It's not so much from walls, but dust from joints around windows and doors. But seriously: we vaporized 200,000 tons a year in gasoline. Where do you think it

It's not so much from walls, but dust from joints around windows and doors. But seriously: we vaporized 200,000 tons a year in gasoline. Where do you think it all went? Places with lots of cars: cities. Definitely do not eat food grown in a city garden- always use raised planters filled with country dirt. https://archive.epa.gov/epa/aboutepa/epa-requires-phase-out-lead-all-grades-gasoline.html https://archive.epa.gov/epa/aboutepa/epa-requires-phase-out-... See figure 2 here: https://www.edf.org/sites/default/files/the-hour-of-lead.pdf https://www.edf.org/sites/default/files/the-hour-of-lead.pdf