Climate Change is, in my opinion, a truly nasty issue. There's so much deliberate misinformation on both sides of the debate, but despite all that I have to honestly say that I firmly believe humans are causing it. The fact is that all the data we have points towards an increase in the Earth's temperature since the Industrial Revolution. You can claim that that's not a lot of time in the context of the world, but it's still a good amount of data that shows a steady rise. It's pretty much the most reliable, and largest body of data we have, and closing our eyes and hoping that it doesn't count is hardly a good way of dealing with the issue.
Now, for an anaylsis of some of the common counter-climate change arguments, a good number of which were summed up by Kyle Meadows:
Kyle Meadows said:
The earth has been here for BILLIONS of years.
The age of the earth is irrelevent, even if you're using it to put the amount of data we have on the Earth's climate into perspective. If climate change really is just a cyclical event (which I believe it is, but the ones that have gone before are looking to be different from the man-made one occurring in the present), we have no firm knowledge on how frequently and how extreme these cycles are. Oh, we have glaciers and trees that tell us that the climate has changed back and forth over the course of the Earth's history, but so far as I know no one has been able to conclusively state whether what we are experiencing now matches into the cycle of events. On the contrary, what information we do have says that the current rise in temperature is pretty much unprecedented.
Kyle Meadows said:
Six major evolutionary extinction events have happened since life began, mostly due to an a drastic alteration in climate.
Surely this is all the more reason to fear climate change and do what we can to slow it down, not speed it up? If Climate Change has the potential to cause mass extinction, then don't we need to do everything we can to stop it?
Kyle Meadows said:
How are human beings actually self centered enough to think that we actually have an effect on the planet's natural cycles?
Is anyone really naive enough to believe that we can't? Humans have shaped this world to a colossal extent. As one random example, we have enough nuclear weapons to obliterate all life on Earth a ridiculous number of times over. A problem in one, single oil rig last year caused a massive ecological disaster. We managed to create chemicals like CFC that punched a hole in the Ozone layer. The whole of human history says, quite resoundingly, that YES we can have a massive effect on the planet. I can't believe that there's anyone who has seen what human technology in the modern era is capable of that doesn't believe we can cause massive and irreperable harm to the planet.
Kyle Meadows said:
If anything, we've merely sped up the change by inputting more carbon dioxide.
I agree. The fact that Climate Change is a cyclical event is more or less impossible to dispute. The issue is that the climate sceptics tend to use this information as if it means that we can't have an effect on Climate Change one way or another. But we can, and it does appear that we're not only speeding it up, but making it more severe. Just watch the news sometime. I live in Queensland and got to see the effect of the flood, and the first thing that ran through my mind was Al Gore in the Inconvenient Truth saying that as time passed storms would become less frequent and more severe. Since Queensland is only just emerging from a massive drought, only to be greeted by the biggest flooding in the state's (admittedly short) history (well, in Brisbane specifically, while the 1974 floods technically covered more ground, they didn't have massive dams keeping back most of the water).
Basically, if we are speeding up climate change, and taking into account the whole "Climate Change has already caused a number of mass extinctions" issue, I really would prefer it if we stopped speeding it up. I like my human race not going the way of the Dodo, thank you very much.
Kyle Meadows said:
But we did not cause it, and the fact is that there are forest fires, methane gas bubbles from the ocean (which release only methane, another greenhouse gas), and volcanic eruptions among various other assorted events that release massive amounts of carbon dioxide. Does anyone here remember the "new ice age" in the 70s? The theory is founded upon and perpetuated by arrogance.
Has anyone actually measured the amount of Greenhouse gas released by the many natural events and compared it to the amount released by humanity since the start of the Industrial Revolution? I'm honestly not aware of any such study, which by and large means that any speculation on whether these natural events are having a bigger impact than the combined total of human activity since we really got into the whole Carbon Dioxide producing gig. Although honestly, I'm fairly certain that in a comparison the human contribution would at least be significant, if not greater than all the natural causes combined. We don't even need to do more than the planet however. So many natural systems of this planet are inherently fragile and easily upset. A small percentage may be all that is needed to tip the climate system over the edge. Of course, it doesn't help that with all our forest burning, we're not just producing Carbon Dioxide but also limiting the planet's capacity to reabsorb it.
Regardless, Renewable energy is a good idea for more reasons than one. It cuts down on normal pollution, it is ultimately less expensive for the individuals, and to top it off I love the idea of being self-sufficient.
Sorry for the wall of text. Now, I would like to refer people to a fantastic Climate-conscious film. The Naked Gun 2 and 1/2 http://www.youtube.com/watch?v=hA9S5IM8T3U&feature=related