Videos from the Space Elevator Conference

Charles Radley attended the Space Elevator Conference this year and decided to record a number of videos of the event – I commend him for doing so.  If you go to his YouTube page, you can see all of them (there are several).  Below is one of them;

[youtube]http://www.youtube.com/watch?v=BxB3Qk8_m_M[/youtube]