Global Warming - do you believe?

A headline from CBC states "Almost 4 out of 5 Canadians believe in global warming: poll".

...
In Alberta, 69 per cent of respondents said they believed in global warming, while in Quebec, the number soared to 83 per cent.
...
The online survey of about 3,600 people found many Canadians — 30 per cent — believed global warming was the top issue for politicians to address, almost as many as the 31 per cent of Canadians who put health care as the top priority.
...
Only 12 per cent of those surveyed viewed global warming as "junk science" and only two per cent believed global warming isn't happening at all.

This headline caught my eye because it makes global warming sound like a religion, 4 out 5 believe in global warming. I don't think global warming is a matter of faith. Either the ozone layer has a hole in it, or it doesn't. Either the ice caps are melting faster, or they're not.

Fortunately, we can measure these things. We don't have to just pick a random opinion to believe in.

Update:
Also found this at the CBC [bolds mine]:

While former U.S. vice-president Al Gore was in Washington on Wednesday, speaking about the need for action on world climate change, one of his disciples was in Saint John spreading the same message to high school students.

Peter Corbyn, a Fredericton-based professional engineer who was the only Atlantic Canadian out of 500 people trained by Gore as a "Global Warming Messenger," told students at St. Malachy's High School "we dump about 25 million tonnes a day of carbon dioxide into the oceans."

Disciples!?!

Congrats to Peter Corbyn for "spreading the word" in our corner of the world.