Interesting course at Coursera. I wonder if it would be beneficial to take the class merely for the edification of one's self? It would be nice if it were objective and not biased one way or the other.
Global Warming I: The Science and Modeling of Climate Change
About this course: This class describes the science of global warming and the forecast for humans’ impact on Earth’s climate. Intended for an audience without much scientific background but a healthy sense of curiosity, the class brings together insights and perspectives from physics, chemistry, biology, earth and atmospheric sciences, and even some economics—all based on a foundation of simple mathematics (algebra).
I've taken a couple of courses from Coursera in the past just for that reason...to educate myself. No other professional motivation.