How does Liberal and Conservative come into a conversation about climate change? The earth's climate is ALWAYS CHANGING. Not only does the earth spin on it's axis and orbit the sun, it also wobbles and wiggles, vibrates and hums. The sun is also changing, creating energy through nuclear fusion near it's core. Our universe, our galaxy, our solar system, is extremely dynamic, ever moving, ever expanding, ever changing. Nothing is stable or constant. Thus our climate is always changing as well.
The damage that man is doing to planet earth is not harming the planet nearly so much as it is harming man himself. Once man is gone from the earth, it won't take long (relatively speaking) for the earth to cleanse itself of most of the evidence that man was here.
The reason we need to take care of the earth is not for earth's sake, but for OUR SAKE.