Revisionist history much?<p>We <i>added</i> lead to gasoline in the 1920s and it remained legal in most countries (including the US) until 1990s.  In other words, it took us seventy years to stop actively adding toxic heavy metal to gasoline so that it spreads everywhere cars can go.<p>After all, we&#x27;re talking about an industry that can spread FUD about a whole branch of science.  I see no reason why they wouldn&#x27;t do the same to other pollution problems.