Video: Up close and personal with Richard Branson at Rio

At the Rio+20 conference this week, Richard Branson was everywhere (including two rows behind me on my flight from Houston to Rio -- on United Airlines, for what it's worth). I counted at least a dozen events at which he was the featured speaker -- and, I'm sure, dozens of others not on the official schedule. In almost all cases, he was the charming, reluctant, always quotable headliner.

One of those headlining events was the World Green Summit, where I moderated a session on sustainable cities. I caught up with Sir Richard briefly after the Summit, just long enough to get in three questions -- including two that had to do with "screwing." You'll have to watch the video to find out more.