Returning from ball practice tonight, my 5th grader informed me that today, in science class, he learned that carbon dioxide is causing global warming, melting glaciers, etc., etc. My initial reaction was to say "that's a bunch of baloney" but I contained myself. I'm not surprised that they're teaching it, and I'm ok with him hearing about it (it's everywhere nowadays anyway), provided he learns to take in the information with a critical mindset and challenge it. He'll learn more that way anyway. We discussed the difference between theories and facts, as well as the importance of using the scientific...