Smartphones and our information overload

The internet, and the ever-present smartphones from which we cannot detach ourselves, are changing the ways we relate to technology - and, at the same time, changing the way we use our brains. Senior Contributor Ted Koppel talks with technology critic Nicholas Carr, software developer Justin Rosenstein, “media psychologist” Byron Reeves, and Sen. Mark Warner about how the internet and social media have become weaponized, and how it is our attention spans that are being targeted.