The cost is typically around $50. Here's how to "read" tailpipe smoke signals to help you determine whether they're the byproduct of a harmless atmospheric phenomenon or the first sign of a major ...

Martin A. Lee is the author of Smoke Signals: A Social History of Marijuana – Medical, Recreational and Scientific (Scribner, August 2012). He is the cofounder of the media watch group FAIR ...

Have you had enough of those images of smoke signals coming out of the Vatican? If so, check out the video above. Taken in Piazza San Pietro, it shows a topless Femen protester shouting what is ...