It is impossible to fathom the potential consequences of current climate change scenarios without taking into account the growing likelihood of a mass extinction of species. Scientists and archeologists estimate that the last mass extinction on Earth wiped out nearly a fifth of all life. Given the interconnectedness of everything, an event of that magnitude would be very bad news for humans. What worries me is that it might already be too late to stop it happening. We are destroying the earth’s biodiversity at breakneck speed and most of our conservation efforts amount to mere window dressing in the scheme of things. Polar bears are (forgive the pun) just the tip of a very large iceberg.