Professer Michio Kaku Talking about Scifi civilizations

[alanp]

Start watching at about the 46:23 mark.  I tried to make it start there, but it starts at the beginning.

http://youtu.be/219YybX66MY?t=46m23s

I thought this was cool.

[Bromptonboy]

Rats, I can't see this while at work (all the linked stuff gets filtered out). 

Love this guy, every now and then I see him guest speaking at the Franklin Institute in Philadlephia. (although the last time was a few years back)