Here's the scoop on PopCast:
"Pop!Casts are available free of charge. And they’re published under a Creative Commons license—meaning you can distribute, translate and edit them as you wish for noncommercial use.
Sharing Pop!Casts with peers is one of the ways you can inspire collective thinking and action around the topics you’re most interested in.
And be sure to listen to the vodcast featuring Tom "The Flat World" Friedman. His message? Think Green.