This guy invented CFC which depleted the ozone layer, and added lead to gasoline, leading to widespread lead poisoning and crime (lead makes people into dumb criminals).
2022-02-23:

It has been suggested that the Roman period should be called the “Lead Age,” an archaeological successor to the Iron Age. Lead was used extensively in Roman construction, because it is malleable and resists corrosion when in contact with air and water. Molten lead was poured around iron clamps to join column drums together and to secure marble facades to blockwork. Lead sheets and solder were used to form and seal waterproof joints. Most famously, lead was used in Roman waterworks: to form pipes that transport water at pressure, to plumb fountains and baths, for rain gutters and roofs, and as tanks to store water, including potable water, for various purposes. It has been determined that the piped water of the city of Rome may have contained 40x the lead of natural spring water before 250, falling to 14x by the year 500, as pipes became choked with scale, cracked, and failed, and the broader water system fell into disrepair.
Contrary to a popular theory, it is unlikely that many Romans ingested toxic levels of lead from their water pipes. Although lead is soluble in water, calcium carbonate deposited by hard water provided a barrier between water and lead. Moreover, calcium prevents the gut from absorbing lead. Drinking hard water transported in lead pipes did not present a major health risk to Romans, although in soft-water areas the risks were higher, and lead carbonate might form a less protective scale inside pipes. If not from their water, however, Romans contrived many additional ways to ingest and absorb lead. It was used for medicinal purposes, in cooking and for mixing sauces, and for preserving and sweetening wine. Roman saucepans manufactured from a mixture of lead and tin were used to produce reductions of must (unfermented grape juice) called, according to its concentration, sapa, defrutum, or caroenum, all full of lead. Salt was produced in lead brine pans, heated to evaporate water, before the salt was chipped and scraped away.
At 3rd-5th-century cemeteries, lead concentrations were in a range from 100 to 250 mg/g, compared with c. 14 mg/g measured in the ribs of Neolithic farmers. Natives of Roman Britain were also far shorter than their Neolithic predecessors and, just as strikingly, shorter than the population that followed them. Women were on average only 152 centimeters tall and men 164 centimeters. The average length of a Roman’s thighbone was 3 centimeters shorter than that of an Anglo-Saxon. While changes in diet and disease burden after the Roman conquest were consequential, data suggest that Roman-age Britons were on average eating more proteins, including a range of seawater fish and mollusks, than their Iron Age ancestors, which should have led to an increase in stature.

One must wonder, therefore, at the impact of extremely elevated lead concentrations, since any level of lead contamination is known to stunt growth in children.