I was watching a show on Discovery Science earlier called Extinction Files. They were going through all the mass extinctions throughout Earth's history. Some of the scientists and such were saying how an average species only has a span of existance on Earth of between 1 and 10 million years, and that if and when the next mass extinction happens, that the main species to thrive afterwards would be roaches, rats, and weeds. So it it got to me thinking if humans would be able to adapt and/or evolve, would become extinct, or already be inhabiting other planets and not have to worry about the extinction. So what do you guys/gals think?