Q&BA: Getting kids into science

A few years ago, I started doing a weekly video question-and-answer session I called "Q & BA". It was a series of short videos that were a lot of fun to make. Unfortunately, the overhead got to be too high -- it took all day to edit them! -- and I had to stop. But now, Google+ has changed that: Hangouts On Air is a feature that allows me to go on camera and broadcast a live video chat session to an unlimited audience. I take questions via Twitter and G+, and it's a lot of fun. It lasts about an hour, and I put the whole session on YouTube. But some of the answers stand alone, and it's easy to extract them out, package 'em up, and post 'em by themselves. So I'm very pleased to announce I'm starting the series again! The first Q&BA is a great question: ...