First of all, I recommend that everyone go out and get a copy of Lester Brown's Plan B 4.0: Mobilizing to Save Civilization http://www.amazon.com/dp/0393337197/ref=cm_sw_r_tw_dp_EfOlvb1B73PD7
Better yet, pick up a few used copies and share them with friends. Start a reading group and meet regularly at your favorite local cafe, bakery or brewery.
My dad introduced me to Lester Brown years ago and his message, sadly, cannot be more appropriate than it is right now.
See the video for a brief interview about alternative energy.
Get more info here: http://www.earth-policy.org/