> He played a major role in developing leaded gasoline (Tetraethyllead) and some of the first chlorofluorocarbons (CFCs), better known by its brand name Freon

> He played a major role in developing leaded gasoline (Tetraethyllead) and some of the first chlorofluorocarbons (CFCs), better known by its brand name Freon Some would argue that his impact wasn't even net-positive. He might have done it in good faith, but it didn't really work out well.