January 10, 2012 5:24 pm Effect of Pot Smoking on Lungs Dr. Bruce Hensel looks at a study that tested the effect of pot smoking on lungs. US & World Videos 2:03 Jennifer Lopez ‘likes' post about relationship issues amid Ben Affleck rumors 6:20 Get ready with Kelly Clarkson fan Q&A 2:19 What Hoda Kotb and Jenna Bush Hager are ‘done' with as moms 5:13 Corrine Foxx reveals dad Jamie Foxx's ‘over-the-top' suggestion for her wedding 2:10 New security alert warns Americans overseas of potential attacks on LGBTQ events