I think this option then leads us to catch the atmosphere on fire, burning everything on the surface to a crisp and thus doing to ourselves what we were trying to avoid from the alien invasion. Then, a million years later, larger, intelligent descendants of ants take over the earth. Charlton Heston would be a logical lead to do the movie version, or his computer animated avatar. But who would play the head of the ant civillization? Hmmm, perhaps Hugo Weaving, but should the ants have an Australian, British, or American accent? Decisions, decisions...