Because they are not really bright people.
Prager misses one point: the fact the Bush is largely indifferent to global warming - thinks its threat is vastly exaggerated - the Left will be spurred on to exaggerqate it even more, as part of its anti-Bush mania. If Bush declared himself in favor of wind farms, I bet the left would suddenly think of all sorts of reasons why wind farms are a bad idea - visual eyesore, threat to birds, ineffective, etc.
exactly
For an example of what rising water levels would do to coastal city populations, consider what happened in New Orleans. Most of the poor people scattered across the country. Most of the more financially able folks stayed there (because they were able to afford houses on higher ground and were less affected). And the political leadership started making noises about "Gee, looks like we can't just sit around and wait for Uncle Sugar to fix things, we're going to have to go to work."
Within the environmental movement, there are two camps. There is the global warming is caused by CO2 and only CO2 group, and there is the other group that is concerned with particulate emissions, water purity, wildlife issues, etc., who WILL entertain the POSSIBILITY that if global warming is occuring, it could be caused by either solar activity or natural climate change.
The first camp has cloaked their Marxist agenda in the environmental movement, and will continue to use it to beat capitalism over the head. For me, CO2 warming is a complete hoax, conveniently invented to aid losers to win at SOMETHING.
Liberals are also very arrogant.
Everything that happens must be caused by humans, or if not, can and must be controlled by (liberal) humans.
The thought of something bigger than humanity, with forces so vast and unknown, that cannot be put under liberal control, is very scary.
The recent evidence that the Sun does not have a constant output is an inconvenient truth that must never be mentioned (unless you are Roger Waters and can set the controls for the heart of the Sun).
Many climate scientists have speculated that the global climate is strongly influenced by the Milankovitch Cycle of the Earth's orbit, and there is some data to suggest that the theory is correct. This concept must never be mentioned by liberals or the liberal media, because making the entire globe socialist would not change the course of global climate change- it would be beyond liberal control. A terrifying thought, that there could be something beyond the control of a liberal!
It's also just how politics works in general, when an issue becomes two sided people who wouldn't normally care at all about "global warming" or whatever feel like they have to defend or oppose it just to further their own little basket of issues they care about, and they become so entrenched that all of a sudden admitting that either "maybe it is an overreaction" or "maybe humans are having negative impacts on the environment" becomes unthinkable and admitting defeat. This is true on pretty much any issue you can think of. The truth is even the people worried about global warming aren't really doing anything to prevent it they just want to complain, there is only a small percentage that honestly cares enough to make the sacrifice, so its really a nonissue and eventually we will either come up with new ways of doing things and technologies or run out of fuel anyway.
Rejecting Kyoto was one of the wisest things George W. Bush has done as POTUS.
No. We're just smart enough to turn on the stupid air conditioner.