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Most climatologists agree that, at best, global warming is a theory about future climactic conditions and cannot be proven based upon the historic record.

You always have to be worried about something that is considered a so-called 'scientific theory' that fits every scenario. Climate change, as they've defined it, can never be disproved.

Some scientists believe climate change is the cause of unprecedented melting of the North Pole, and that effects these very uncertain weather patterns. I think we should listen to those scientists and experts.

As this body of knowledge has evolved, a much more critical job for researchers and scientists has evolved into explaining and educating policy makers and the public to the risks of global warming and the possible consequences of action or of no action.

Faced with the evidence, many deniers have started to admit that global warming is real, but argue that humans have little or nothing to do with it.

Unfortunately the global warming hysteria, as I see it, is driven by politics more than by science.

Most North Americans know that human-caused global warming is real, even if political leaders don't always reflect or act on that knowledge.

It is characteristic of science that the full explanations are often seized in their essence by the percipient scientist long in advance of any possible proof.

I think there is a degree of speculation that is satisfied the climate is changing.