The sky is blue form water reflection in the atmosphere. Not much to talk about there. Space is a lot deeper than we can currently travel. Totally agree with you on the tree thing. May only be 5-10% of our oxygen, but they hold our soil in place, provide habitats for millions of animals, food for us, and lots of other cool things. Clearcutting needs to stop. My sister's a marine biologist. She could tell you more about sea life than I can. I'm all about talking about some serious stuff. That stuff just seems to already have other forums. I might actually go check some of them threads out today.