In 2004, battery-powered electronic cigarettes (e-cigarettes) hit the commercial market - the devices heat up liquid and turn it into an aerosol vapor, or e-liquid, that can be inhaled. The contents typically consist of nlycerine, propylene glycol, flavoring, and varying (or nonexistent) levels of nicotine. E-cigarettes are popular with people who are trying to quit smoking, who may choose to take up vaping as a less toxic alternative, as the amount of nicotine in e-cigarettes is not nearly as harmful as it is in tobacco cigarettes...or so we thought. A recently published study by chemists at the University of Connecticut (UConn) has new evidence that e-cigarettes could be just as bad for us as real cigarettes. The UConn team used a low-cost, 3D printed testing device to determine that e-cigarettes with nicotine-based liquid can cause just as much DNA damage as unfiltered tobacco cigarettes, and also that the vapor from non-nicotine cigarettes is as harmful to our DNA as filtered cigarettes. Read more at