An April 5 US News & World Report story on thirdhand smoke (THS), the toxic contamination that remains after the cigarette is extinguished, quoted Bo Hang, biochemist staff scientist in the Biological Systems & Engineering Division. Previous studies, led by Hang, have found that THS can damage DNA in human cells; subsequent animal studies by others have found that THS damages the liver and lungs, impedes the healing of wounds and can contribute to hyperactivity. Now, new research by Martins Green et al. published in PLOS ONE shows that, in mice, THS causes insulin resistance, a precursor to Type 2 diabetes. “This is a relatively new area,” says Hang, who continues to study the potential harmful effects of thirdhand smoke. Read the full story.