How 2 Brothers Turned a YouTube Experiment Into a Charitable Mission

Six years ago, brothers Hank and John Green took their relationship to a new level by ceasing all textual communication for one year. On Jan. 1, 2007, Hank posted the first video blog to the VlogBrothers YouTube channel, and it was John's brotherly duty to respond the following day. They called their new video-based relationship "Brotherhood 2.0." YouTube wasn't a daily part of Internet users lives at that time, but the brothers were eager to create a project together — even when they wer...