Food for (rational) thought.
I have just a few points to make here.
Those who were around 30 or so years ago, may remember the "inevitable climate catastrophe" that awaited us then. It was the impending ICE AGE. Why did they think an ice age was coming? Mainly, because from 1940-1970, global temperatures dropped steadily, and the fear was runaway global cooling. Who was one big backer of the "coming ice age" theory? None other than James Hansen. Last time I checked, Ontario had not been erased by a glacier.
I personally find it odd that the global temperature dropped during this period. This was WW2 and a post-industrial West. CO2 levels were skyrocketing during this time, yet the temperature continued to fall. This would seem to fly in the face of the (high CO2) => (global warming) equation.
Anyone ever wonder what happened to the "hockey stick" graph that Al Gore, Hansen, and others flapped around so wildly claiming it was "definitive proof"? Well, it got thoroughly smacked about, and was proven to show the exact opposite of what it had been claimed to show. Yes, the chart did indeed show a link between high CO2 levels and global temps. But, the relationship showed that the temperature change came FIRST, then the CO2 levels would rise. Hansen and Co. would have us believe that the effect preceded the cause. This is the caliber of scientist you have in James Hansen.
People seem to often confuse two separate issues. There is climate change, and then there is human-induced climate change. There isn't much we can do about the first. So, there are no careers or fortunes to be made pursuing it. Few would argue that climate change is not happening. It is happening, and has always happened. The climate is not a steady state machine. The climate has always swung back and forth between extremes, ice ages to global jungles. The human race has just been damned lucky that we popped up when we did, in the middle of a relatively temperate period. One which has lasted long enough for us to develop technologies that would allow us to survive much of what the planet could throw at us.
Computer models are often cited as good evidence for human-induced climate change. One way (really, the only way) to test if a model is accurate, is to have it predict the weather for a period of time that we already have reliable records for. Say, 1970-1980. If the model's predictions match up with the recorded data, the model can be claimed to be sound. However, no one has yet produced a model that can reliably pass this test. As any programmer could tell you, garbage in = garbage out.
The doomsayers often make a point of the fact that 1998 was the hottest year on record. Which it was. But, if we are in a warming period, should that record not have been consecutively broken in 1999, 2000, 2001, 2002, etc? Well, it wasn't. Indeed, global temps have done nothing but go down since then. So, where's the warming?
Back in the 70's, similarly drastic, economy killing "solutions" were proposed. Careers and fortunes were made, and then the whole furor died down. I see the cycle of history repeating itself here (at much greater expense). The Greens tell us the opposition can't be trusted because they have a vested financial interest in the status quo. Well, the Greens have just as much of a vested financial interest in this game. No one is going to pay Hansen to give a speech on global warming if there's no apocalypse around the corner.
Is climate change happening? Yes. Are humans responsible for it, even in part? To me at least, and to quite a few meteorologists (a title Hansen can not claim btw), the evidence to date would seem to say no. One last thing, some might say "Of course it's us, what else could it possibly be?". These people seem to forget about this big bright thing that occupies the daytime sky. This thing which is a runaway nuclear fusion reactor 800,000 miles across, and is anything but stable and unchanging. The Sun drives ALL of our weather. If the Sun changes, the weather changes.
The dead vulture, because its bloated, rotting corpse will release methane and CO2, bringing us all that much closer to the end.