Over the years, scientists have envisioned a few radical, some might even say crazy, ways to combat global warming. With such dire consequences, it's hard to blame them for thinking out of the box. The most outlandish solutions tend to share the implicit notion that it's somehow easier to radically alter the Earth than it is to simply change human behavior. Junk science or necessary action? You decide. Here's our list of the 10 most outlandish ideas for stopping global warming. (Text: Bryan Nelson)