...from a lost time machine
He was a boy. Just another poor boy on the street just like all the other poor boys on the street. They were crying out for food. Dying of starvation. While the moon collapsed above, cleaves of it falling, crashing onto Earth. The dream was real and he had woken up inside it.
Earth had been a victim of change for a while but it had resisted, or the humans themselves had preffered to ignore the consequences. Their dire inaction had proven fatal, their ignorance proven to be some archaic and shoking suicidal tendency perhaps put there by the Creator himself so that eventually, by ignorance and arrogance, they would kill themselves in the end.
It was all very neat and practical.
The pundits and intellectuals claimed destruction was nigh and potentially fatal. But by the time it had sunk in that it was in actuality not fatal to the planet itself but rather only to its inhabitants, the damage was done. Earth as they knew it was no more.
She purged them. This destructive bacteria. This troublesome fauna imbalancing her system. Causing her pain in all the wrong places. Causing her irritation and sickness. When things got serious she went into labour. Her oceans rose up and smothered the land in seething giant waves, earthquakes tore the ground asunder, lava lakes, acid rains, thunder and lightning, brought chaos and destruction that were never remembered, but still, they were a part of a repeat performance.
She was in tremendous pain, But pain was needed for a fresh start. In order for her to relive the days when she was young and free, in order for her to feel new again.
20 millions years later, the species later to be known as the Blattella made it's first flint tool.