Is technology ruining our teenagers? Today’s teens are constantly staring at screens of smartphones, iPods, tablets, computers and TVs. And the consequences are problematic, psychologist Dr. Aric Sigman has found. Teens’ addiction to gadgets is wrecking their attention spans, triggering depression, and creating a sedentary lifestyle that is linked to heart disease, strokes and diabetes. Not to mention contributing to global warming, SmartPlanet reports. Obviously technology is doing the world a lot of good—but how do we harness tech without turning our children into mush?