The anti-pot campaign, created by the state, and by the city of Denver, unveiled several nine-foot-tall human-sized rat cages on Monday that bear a simple message: Because so much is still unknown ...

A commercial to play at movie theaters cites research studies while showing kids in a car smoking marijuana, adding, "Don't be a lab rat." But the message has already been lost on some people. As ...

The standard rat cage used in the U.S. (right) has 140 square inches of floor space. One interpretation of the new guidelines says this cage wouldn't be big enough to hold a male rat, a female rat ...