Half way through the long article it finally says, "They found that e-cigarettes produce high levels of highly reactive free radicals that fall in the range of 1,000- to 100-times less than levels in regular cigarettes." But the spin of the article is that this is a significant new threat. Penn State is tax supported. All tax supported institutions despise ecigs because they are a funding threat.
Potentially dangerous molecules detected in e-cigarette aerosols | Penn State University
Potentially dangerous molecules detected in e-cigarette aerosols | Penn State University