Hello? Vapor does not produce tar, and no combustion means no carbon monoxide. Those are the two main hazards of smoking which are ABSENT in e-cigarettes. If there were any substances or toxins as obviously harmful as those, they would have been found by now. All anyone's come up with are some potential carcinogens in such minuscule amounts as to be utterly incomparable to tobacco smoke.

I'll allow that there are a lot of dumb Americans out there who just "believe" stuff. But in this case it's rather obvious. Whatever the deleterious effects of e-cigarettes, they are manifestly less harmful than smoking.

You know what else would be worth studying? When the results are in and e-cigarettes are scientifically determined to be at least 95% safer than smoking, i'd like to know how many people were likely killed by irresponsible journalists, because all the fear mongering kept them smoking.