Of course, read it knowing that the writer has a bias that becomes increasingly clear toward the end.
<sarcynicism>And the various pro-"Human-caused"-warming crowd are completely bias-free, of course.</sarcynicism>
In general, on a hot-button topic, especially one which is presented in a binary format like this (either it's true or it's untrue), everyone who is interested in it has a bias. The question simply becomes which side's evidence stands the test. Of course, if you've already hardened your mind that one side is correct, you'll tend to see only the other side as biased.