OK, so I sometimes I try to clarify previous posts. This might be one of those occasions and then again it might just be one of those occasions where I muddy the water, not the singer the post, a little bit more! If human beings manage to destroy the biosphere such that all human life, or indeed all life as we know it, can no longer exist. Then that is a bad thing. But it is a bad thing for all living things on earth and we, human beings, have a choice about whether that happens or not. The planet, however, will continue to exist. Indeed, depending on just how bad human beings destroy the biosphere will depend on two things. One is, whether the planet reverts to planet 0 or planet 1.0 or indeed planet 0.150. The second key thing is whether you believe in the hypothesis that all life on earth started with simple chemical reactions that, over billions of years, resulted in the complexities that are today's living breathing array of things! Granted, this hypothesis is, to quote some...