Kevin Drum in Mother Jones collected the evidence showing a link between youth crime and this condition. For 10 points each:
[10e] Name this condition hypothesized to have caused a spike in crime in the U.S. in the 1970s and 80s until the adoption of alternatives like MTBE. This condition was commonly caused by environmental exposure to a certain heavy metal in gasoline.
ANSWER: lead poisoning [or anything indicating being exposed to or poisoned by lead]
[10h] Gasoline with tetraethyl lead was widely used after being patented by this automobile company, which forms a "big three" with Ford and Chrysler in the USA.
ANSWER: General Motors [or GM]
[10m] This engineer had a major role in developing leaded gasoline and the first CFC-heavy products, leading Fred Pearce to dub him a "one-man environmental disaster." This engineer died after becoming entangled in ropes he created to pull him from bed after contracting polio.
ANSWER: Thomas Midgley Jr.
<Lalit Maharjan , History - American - post-1945>