Today on Past Gas is the insidious story of how GM scientists developed a type of gasoline that caused insanity, sickness, and maybe even murder. This story is so devious that it might feel like a cheap dime store novel, but everything we’re going to tell you is true. Why was lead added to fuel in the first place? Who was the scientist behind it? How did the American government let this happen? And did leaded fuel actually lead to an increase in serial killers?! Let’s find out.

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