We can also compare them to the oil companies that fought against the banning of leaded gasoline. In the mid-20th century, evidence began to mount that the hundreds of thousands of tons of lead put into the atmosphere each year, just by drivers in the United States, were interfering with the brain development of tens of millions of children, impairing their cognitive development and increasing rates of antisocial behavior. Even still, the oil companies continued to produce, market, and sell it.[8]
