Dr. Mike Evans : the viral health video
There is a video on the site "Youtube" that is very popular but has nothing to do with celebrities, animals doing funny things or amazing kids. Believe it or not, it's a health video, called "23 ½ hours."
It's had nearly 2 million views and it's also been the number one educational video in all of Youtube land. Dr. Mike Evans is responsible for the spread of this "viral video" and spoke with Sonali Karnick about the idea behind it.