Let's stir this pot just a bit. No one ever likes to speak in terms of scientific absolutes, but the wiggle room available for skeptics of human-caused global warming is shrinking faster than the snows on Kilimanjaro. The best available objective data make a compelling argument that industrial society is raising global temperatures, and now the question before us is, what do we do about it? What do we, >>at an individual level<<, do in response to this? As astronomy enthusiasts we're supposed to be just a skosh more scientifically literate than the general public. How do we use the knowledge available to us about greenhouse gasses and global warming to modify our individual behaviors to mitigate the consequences of our carbon-based economy? Seth