<i>Course, then there are cases like the leaded gasoline that should be considered one of the greatest crimes of all time.</i><p>Yep, and it&#x27;s still going on.  Some small planes still use leaded fuels.  <a href="http:&#x2F;&#x2F;ehp.niehs.nih.gov&#x2F;121-a54&#x2F;" rel="nofollow">http:&#x2F;&#x2F;ehp.niehs.nih.gov&#x2F;121-a54&#x2F;</a>