A pop star’s money maker is his or her voice. Especially the ones who can really sing, like Adele or Bruno Mars. Adele’s smoking habit is well-publicized, and she had to give it up, begrudgingly, to save her voice. Now, Mars is the latest pop star to be photographed smoking, which should be a no-no, considering the havoc it can wreak on the vocal cords. Tsk, tsk.