Matter of Opinion

Tue., June 19, 2007

Man’s connection to global warming

Casey King has asked the question that is at the center of the global warming issue. Hardly anyone disputes that the Earth is warming, but is man to blame?

The scientific consensus is yes, but how do they know?

The short answer: They know the difference between the various types of greenhouse gases in the atmosphere. And they know that we're pumping it up there faster than the planet can clear it out.

Here's the long answer.

Posted June 19, 2007, 10:58 a.m.

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