Re: Kessler effect
In the animated series 'Cowboy Bebop' an accident in space resulted in chunks of the moon clogging earth orbit to the point where it's hazardous to navigate (in space) and large orbital rocks are frequently (and somewhat randomly) falling onto the earth, causing craters, damage, etc..
A worst case sci-fi scenario, yeah, but something to avoid. Let's not have to dodge existing satellites when firing rockets into space, especially as more countries around the world get their own space programs going.
(or will booster rockets have to use particle beams or other space-weaponry to blast obstacles out of their way in order to avoid collisions during launch?)
Another, this time literary, reference to a book I read as a small kid: "If Everybody Did" [lampoons what would happen if everybody were to do certain things, taken to extremes in a funny-when-you-are-six kind of way]