Officially is when the Sun dies. That should happen in some billion years from now.
As for life on this planet, well, at the pace species are getting extinct… Maybe in a shorter term that we’d like to admit. Let’s not forget that we’re animals as well.
The good news is that some species have a tremendous ability to adapt, like cockroaches and beetles. And hopefully we’ll be inhabiting some other planet when that time comes.
okay let’s answer this once and for, my Shadow spies report the armies from hell are mobilizing and are preparing to take over when McCain becomes president, and when 2013 arrives.