I was thinking about this today on the ride into work while listening to a story on the radio about a towns effort to save a local from from becoming endangered or extinct. It is generally believed that 99% of all species that have ever lived on Earth have gone extinct. Most of those extinctions happened before humans even existed so we played no role in those species disappearing forever. That would mean that extinction is a normal part of most live cycles of a species. So if that is the case, should be be working as hard as we are to keep species from becoming extinct? humans have artificially caused extinctions to happen because of what we have done to habitats and environment and with hunting and things like that. I am not talking about not saving species that we were the cause of the extinction, but should ever endangered species be saved? Will that hold back new species from developing or cause other things to happen or not happen that we have not even considered?