But that's just in the west, where heat in Arizona, New Mexico and Utah have hit record levels recently. In other areas of the country, there are deluges and flooding, and clusters of tornado outbreaks. Being of a fatalistic sort of mind, I always see these things as proof that, "See - the world is ending, just like I thought." Maybe. But maybe not. The Four Corners region was once the center of the Ancient Pueblo Indian cultures, which lasted for hundreds of years. But after the climate slowly became too hot and dry to sustain a large community - through no fault of their own, I might add - they had to pack up and go somewhere else to find water (to make the story brief.)
The planet goes though cycles and changes, and while human endeavors are certainly speeding things up towards some kind of global extinction event, it's unlikely that the world will end anytime soon (unless, of course, some big rock from outer space hits us directly - then, I guess, all bets are off.)
No, the only ones for whom our behavior spells catastrophe are us. We'll take several species of P&A with us, but the planet will survive, and new things will take our place. We can only hope they'll have the capacity to learn from their mistakes.
Chart courtesy of: http://dish.andrewsullivan.com/2012/11/02/insuring-disaster/