Global Warming and our Changing World

Today I watched a show about what could happen if a super comet hit the earth and did to us what happened with the dinosaurs. I was surprised to learn that the outlook for us isn't nearly as bleak, since many species have evolved to weather cataclysmic events.

There's a toad or some such creature in Canada that has evolved to where it can survive being frozen three quarters of a year. If we could adapt the biological processes it uses, we could cryogenically preserve humans without needing more advance technology to thaw them out.

I once heard that some people believe the U.S. government has a system of underground tunnels and bases set in place. The show presented a scenario in which going to an underground facility would have been very helpful for a lot of people. If an extinction event does occur, I wonder if it will be revealed that we really do have abundant bunker space? Or maybe it's reserved for VIPs...