It goes beyond that, unfortunately. See
http://www.epa.gov/climatechange/science/indicators/index.html. And that's just normal people acting normally without understanding the consequences that are right in front of them or recognizing the early (or not so early - aside from many signs shown in the above article, look at just one hardly considered one regarding coral reefs:
http://en.wikipedia.org/wiki/Human_impact_on_coral_reefs) signs that are already there, especially when looked at in combination, and realizing that stopping or reversing some of these things are already beyond our science even if we somehow stopped causing further harm tomorrow or even worked together to try to fix things. To use a computer analogy, we've developed a "just add more RAM" approach to everything, but seem to have forgotten that doesn't always do the trick and eventually, even if that does work for a time, we always hit a maximum or reach a point where something else becomes the bottleneck (and with the Earth, the bottleneck may be something we don't know how to do anything about - and I fear we've already crossed some critical points of no return).
And that doesn't even include the madness from the use of WMD (biological, chemical, nuclear) not by Russia vs. the USA like in the 50's and 60's ("On the Beach" or "WW-III" or "Alas, Babylon"), but now from more and more countries and even small groups where all it takes is dedicated people with minimal funding to cause a genocidal catastrophe. While world-wide global thermonuclear war is probably less likely than it was, the risk of isolated incidents as more countries inevitably gain the ability grows every year. And it's already possible for someone (way too many people) with "common" knowledge of microbiology and genetic engineering and either access to something nasty to start with or just a little bit of luck - if that's the right word - to create an "I Am Legend" or "Dawn of the Dead" or "The Stand" or a similar scenario (or at least something like the Flu of 1918 - or 10X worse given how much more travel now occurs to spread it wider and faster than was possible then and intentionally making it worse). And that's assuming things like that don't already exist in Fort Detrick or elsewhere (and I'd bet they do) where we pray they never have "an accident."
While I admit I love watching such movies and reading such books, facing it in the real world is an entirely different thing. The world is approaching these sci-fi/horror scenarios (or the risk of them) far too fast. But I'll be damned if I have a clue what can really be done about almost any of it short of a truly fictional solution that may make things better or be equally bad in a different way.
Oh well, enough doom-and-gloom for one post.
Kosh
