I did not know that.
Rush doesn’t seem to know it either, but there has been articles in the WSJ about the devices. That is the real reason for the push against the e-cigs. I think that they vaporize a tch paste. Actually, you can put anything in there that you want and vaporize it.
They have also come up with a type that supposedly eliminates the high and can be used medicinally. It seems to be particularly effective for children with severe epilepsy. Somehow, the marijuana works to prevent the seizures. So, it is obvious from that marijuana does have some affect on the brain.