One of the most interesting features of Google’s new social media service, Google+, is Google+ Hangout On Air. A group of people get onto G+ all at once, fire up their computers’ cameras, and have a conversation. Google puts whoever is speaking at the moment on the main screen. You can join a hangout if it’s public or if you have an invitation, and–coolest of all–it automatically records the conversation and throws it onto Youtube.

Right now only a few people have access to this service. I jealously watched fellow Discover blogger Phil Plait talk about exoplanets last month. (You can too.) And then I got invited to join the folks at the Singularity Hub for a hangout,