CO2 levels now aren't great, but I'm not sure Roman-era lead emissions were an i...

		jdminhbg on April 4, 2020 \| parent \| context \| favorite \| on: The highest paid athlete of all time was a Roman C... CO2 levels now aren't great, but I'm not sure Roman-era lead emissions were an improvement: https://phys.org/news/2019-05-roman-polluted-european-air-he...