Do you live in your own 'filter bubble' (and do you want to burst it)?

When you log on to social media do you like and agree with most of what you see? Do most of your friends share the same views and values as you? If so, you could be living in a "filter bubble" and, according to Barack Obama, it is having a serious impact on society. Dan Damon asked Nick Lum, founder of Read Across The Aisle, why he would like people to be exposed to different beliefs and attitudes.

(Picture: Row of people on mobile devices Credit: Thinkstock