Ensiger said:
I forgot where I heard this, it was in some article, that like, 172 scientists disagreed with Global Warming, and said that the Earth was actually cooler than it should've been, and that now it's actually warming up to the temperatures from like centuries ago. I haven't studied any of this as much as I should, but they gave pretty good evidence, and convinced me.
It's true that the Earth is cooler than it should be if the only thing contributing to its temperature is greenhouse gases. But it's not, and again it's our fault for it. Allow me to explain.
CO2 and related gases are not the only thing we dump in the atmosphere that affect it. We also dump an awful lot of SO2 as well (hence the primary cause of more acidic rains compared to purely natural sources). This gas gets into the stratosphere and forms an aerosol layer that increases the planet's albedo - basically the reflectivity of the planet. What that means is that less radiation from the sun itself gets into the planet, which is not predicted just by looking at CO2/H2O/CH4 levels alone. Where the Earth should've seen a 6 or 7K rise in temperature over the time we have been measuring it, it has in fact only seen a 1-2K rise, and it's down to this.
However, I'm fairly sure that isn't QUITE what you were getting at there, having read over the quoted post. I just wanted to get that out there since it was vaguely relevant
I don't see how anyone could say the Earth was "cooler than it should've been" though. I mean, sure, say that if it was Ice Age temperatures, but beyond that it seems arbitrary to say that the Earth has to be at a set temperature at a set time. Patterns only get you so far; they can be irregular if they want, and history does not always repeat itself in a regular fashion.
Finally, I know it isn't, but if that was all the scientists that disagreed with global warming it would be a totally insignificant number on the whole. 172 out of the tens of thousands (at least, probably an order of magnitude or two higher) who study the atmosphere is a very small percentage... not saying they don't have a valid view, but the the odds of them being right against the overwhelming evidence against them is not high.
EDIT: Also Slinger I've heard of that. This is a large factor that is frightening atmospheric chemists etc. about global warming - as the temperature of the planet increases cause of our CO2 dumps, the permafrosts and such melt, releasing masses of CH4 into the atmosphere. That gas is several times more influential than CO2 in the atmosphere - basically, if all the methane trapped in the ground got into the atmosphere, you could kiss goodbye to the planet...
Tom, I guess it's so political because politicians are the ones who end up having the final say when it comes to making laws and such, and they by their nature distrust anything and everything that comes there way. It takes YEARS for stuff to happen because of them, time we cannot afford to waste given our current situation. Us scientists have to come up with really overwhelming evidence that cannot be proven wrong in any way, shape or form (such as generating a perfect model to describe and predict situations) before they will admit defeat... as to why one party is more attentive to the issue than another, I have no answer to that :S