What's so crackpot? We're already running huge, poorly understood eco-engineering projects. Coal power generation, for example. The idea here is that for the fi

What's so crackpot? We're already running huge, poorly understood eco-engineering projects. Coal power generation, for example. The idea here is that for the first time some big projects will be aimed at restoring equilibrium. Taking our chances with nature is hardly an option, if it ever was. Nature's solution to excess CO_2 is mass die-offs. Worrying about these projects after what we've been doing to the atmosphere seems like eating week-old junk food until you hurt and then refusing to take an aspirin because it might be tainted. (That's not to say they're all great ideas. Some of them will probably turn out to be foolish. But I don't see anything wrong with the principle behind them.)