Former U.S. Surgeon General Dr. Vivek Murthy says America faced a loneliness epidemic long before we started social distancing to prevent the spread of the coronavirus. Now, Murthy tells CBS News' Dr. Tara Narula that our current situation could either drive us further apart or serve as a "reset" to help us emerge more connected than before the global pandemic. Murthy discusses his new book, "Together: The Healing Power of Human Connection in a Sometimes Lonely World," and the importance of creating and maintaining bonds with the people in our lives. Murthy explains the physical and mental health dangers of loneliness and offers steps on how we can tackle the problem.