Can anyone explain what the right approach to this stuff is? It's an area I am largely ignorant about. According to the Stefan-Boltzmann Law, the Earth should be -18C. Obviously, this isn't true because the Earth isn't a blackbody. But my questions: 1. Why isn't the Earth technically a blackbody? 2. Do gases like CO2 really play a role? 3. How does atmosphere factor into all this? 4. Is there a difference between greenhouse effect and global warming? 5. What about the moon -- which has no atmosphere? How do we account for the differences we see in the Law vs. what we observe? 6. Do we really see a global warming problem on our hands or is it just fearmongering? 7. What technically explains the temperatures we see? 8. Is it correct to say the Earth is a great absorber but poor emitter? I feel like this is a lot like the evolution "debate" where people have a lot of misconceptions (it's absolutely true and we don't need a God to explain it, same goes for abiogenesis models). I'd like to be on the correct side of understanding the greenhouse effect, too. I know it's a misnomer, but why?