While technology has many positive effects, there are also some negative ones that we have to be particularly mindful of. Unfortunately, the fact of the matter is that we are spending more and more time in front of screens, and less time with loved ones. In this thought-provoking video from Big Think, author and journalist Johann Hari explains how our natural, tribal social instincts can cause us to slip into depression, yet ironically, they are the same instincts we can rely on to help pull us out.