Libya and Tunisia and the Pale Blue Dot

Mohammed Bouazizi set himself on fire and started a revolution. That, most experts concur, is how the history books (or, more likely, tablets) will explain the uprisings, overthrows and civil wars in the Arabic world in 2011. History and humanity is a yawning expanse that astronomer Carl Sagan once put into context in "Pale Blue Dot." There is an updated video making the rounds now, this time with footage from Tunisia and Libya.