Another Short here: http://www.youtube.com/watch?v=g52BV7Il_-0 Full Futures Channel Presentation here:http://www.thefutureschannel.com/dockets/realworld/space_based_solar_power/
Also Rea
d Mike Snead's Excellent White Paper "The End of Easy Energy and What to Do about it" about the necessity of Space Solar Power: http://mikesnead.net/resources/spacefaring/white_paper_the_end_of_easy_energy_and_what_to_do_about_it.pdf
