What I Learned about Climate Change: The Science is not Settled by David Siegel

This is a long essay (49 pages!) by a writer who once bought into the story Al Gore and others have pushed about global warming being caused by humans. After conducting his own investigation Siegel came up with different conclusions. He also challenges the "science is settled" mantra we hear when you dare to question whether we're causing global warming. Siegel still follows a vegan diet and calls himself a Democrat so it's not as though he abandoned all of his beliefs in one fell swoop. He just changed his mind on climate change.

I highly recommend this essay both for its message and as an example of someone who thought things through and came up with different conclusion after thinking objectively about the subject.