Do an internet search on ancient air pollution, preindustrial revolution. Get creative in

 Do an internet search on ancient air pollution, preindustrial revolution. Get creative in the search terms. Share what you find in 6-7 sentences.

 Read others' posts BEFORE you post yours. No one's post can refer to the same topic. If someone already posted about your find, you will have to do another search. Please refer to the discussion forum rubric for the grading scheme.
In grading, I look for thoughtful and unique answers. If you state an opinion or fact, please back it up. You are also graded on driving the discussion and participating with others. Rubric for grading discussions:

• Interacts with other participant’s posts – 2.5 points
• Complete sentences – 2.5 points
• Answers the questions – 2.5 points
• Comments drive discussion/are comprehensive – 2.5 points
• Total – 10 points

Except this article

  https://www.researchgate.net/profile/Laszlo-Makra/publication/286284618_Anthropogenic_air_pollution_in_ancient_times/links/56a393b308ae1b65113066f5/Anthropogenic-air-pollution-in-ancient-times.pdf 

 https://phys.org/news/2019-05-roman-polluted-european-air-heavily.html 

 https://www.thevintagenews.com/2019/06/11/roman-pollution/ 

  https://www.smithsonianmag.com/history/air-pollution-has-been-a-problem-since-the-days-of-ancient-rome-3950678/#:~:text=Before%20the%20Industrial%20Revolution%2C%20our,at%20least%202%2C000%20years%20ago.