1. Is climate change really anthropogenic (caused by human activity)? Mars has experienced global warming recently. Are the Republicans to blame there, too?

2. What can we do about it?
2a. If nothing, then we need to quit hand-wringing over it and learn to live with it.
2b. If only something drastic (e.g. reduce human population by 75%), most on this list would not agree that such a remedy is desirable. When the cure is much worse than the disease, you learn to live with the disease.

3. Is it a bad thing? The history of the earth over the last few million years is that it is mostly a frozen snowball, with brief interglacial warming periods lasting 5,000-15,000 years. We are about 13,000 years into the most recent interglacial period. If anthropogenic global warming is staving off an ice age, might that not be a very good thing that we want to continue with? Certain people (aka "liars") will deny this, but as recently as the 1970s and 1980s, we were being warned of the inevitability of the impending return of the ice age. What if such warnings were correct, only we are being saved by our carbon-loading?

Personally, I am not worried about an impending ice age. I do very firmly believe that our dependence on so-called "fossil fuels" is foolish, short-sighted, and bound to fail eventually (probably within two centuries). So I actually agree with many of the aims of the so-called "environmental movement". But I do not for a moment believe that the "environmental movement" is primarily about the environment. It is about political power. The movement's leaders disgust me. I would not trust them to clean my toilets.