C.B.
Vaccines (whether it's better to vaccinate or not)
Co-sleeping
Home schooling
The bailouts of the corporations (were they justified or not and did they really help the economy?)
BPA in plastic-does it really cause the problems people claim they cause?
Extended breastfeeding
Do cell phones cause cancer? (nothing to do with driving, so maybe it would be allowed?)
Those were a few that came to mind. Sounds like an interesting assignment; good luck!