If you have teens or college aged children, pass along this article about the recreational drug mephedrone, also known as 'meow meow' and 'MCAT'.
Also known as 'meow meow' and 'MCAT', mephedrone's immediate effect on the brain is similar to a combination of ecstasy and methamphetamine.
"You get the euphoria and touchy-feeliness of ecstasy together with the intense addictiveness of methamphetamine or cocaine," said Motbey.
The current results, based upon experiments with laboratory rats, provide evidence of mephedrone's ability to damage memory.
... at this stage we know there is a significant, persistent impact with this drug which is relevant to humans, but we don't know why. [emphasis mine]