Penn & Teller don't know jack about global warming.

It doesn't make sense to argue about how much global warming is caused by man - whether it's 5 percent or 50 percent.

Al Gore has a lot to do with the mainstream attention to global warming, but you can't call him a fad, even if he did dance the Macarena.

I don't think global warming is to do with us, I think it's a natural circle. I don't think a few Ferraris make that much difference.

Along with issues like global warming, I think a problem with the world today is population decline.

Fixing global warming is more important than astronomy.

Today, we can see with our own eyes what global warming is doing. In that context it becomes truly irresponsible, if not immoral, for us not to do something.

I am convinced that policies meant to reduce alleged carbon dioxide-induced global warming will be destructive.

On big issues like war in Iraq, but in many other issues they simply must be multilateral. There's no other way around. You have the instances like the global warming convention, the Kyoto protocol, when the U.S. went its own way.

It needs to be understood that global warming countermeasures could transform the economy and foster growth, not hinder it.

Global warming is something that happens to all of us, all at once.

Think on a 50-year scale, which is a much more natural time-scale for global warming. The US is right now spending about 200 million dollars annually on research into renewable energy.

It is easier for a libertarian to attack the science of global warming than to alter one's core libertarian beliefs.

Ancient barrows get cleared away. Legislation is pretty much 19th century. Global warming means there is an awful lot of erosion, exposing new archaeology, there is not the funding around to deal with it.

There is an air of unreality in debating these arcane points when the world is changing in such dramatic ways right in front of our eyes because of global warming.

I'm heartened by the growing awareness of global warming among important communities and organizations in our nation.

Science has been quite embattled. It's the most important thing there is. An arts graduate is not going to fix global warming. They may do other valuable things, but they are not going to fix the planet or cure cancer or get rid of malaria.

Global warming, like Marxism, is a political theory of actions, demanding compliance with its rules.

Preventing global warming from becoming a planetary catastrophe may take something even more drastic than renewable energy, superefficient urban design, and global carbon taxes.

There are more effective ways of tackling environmental problems including global warming, proliferation of plastics, urban sprawl, and the loss of biodiversity than by treaties, top-down regulations, and other approaches offered by big governments and their dependents.