"My uncle is prescribed marijuana."

"My parents use it, and they're doing fine."

As a drug prevention specialist who does in-school presentations in the U.S., as well as internationally, Zach Levin has seen the problem firsthand: Teens know that recreational use is legal in states such as Colorado and that medical use is on the rise, and they're using that information to support the old argument that a little weed never hurt anyone.

And starting today, Illinois teens have one more argument: In a symbolic win for legalization forces that did not change local laws, Cook County residents voted in favor of legalizing recreational marijuana use by a wide margin Tuesday, with 68 percent in favor and 32 percent against.

[continues 790 words]