George Will reported "53 percent do not believe warming has occurred, and another 30 percent are uncertain."

They found that by far the most widespread warming had occurred after the mid 20th century.

Reducing pollution makes sense whether or not global warming occurs.

Global warming has occurred rapidly over the course of the past half-century.

However there is now strong evidence that significant global warming is occurring.

What evidence do we have that global warming is occurring?

Global warming can occur from a variety of causes, both natural and human induced.

I'm not denying that warming has occurred for the past 30 years.

Even after years of study, no one knows how much warming will occur and whether it is dangerous.

A lot of people are scratching their beans about whether global warming is occurring.