by Tom Laskawy Here's something someone should run with. Via Green Inc. I learned that Sen. Ben Nelson just introduced a bill that would encourage development of the agricultural biogas industry with hopes of including it in the stimulus package. Biogas is a renewable form of natural gas derived from any methane source, like, say, manure. While burning biogas does create carbon emissions, it's more than offset by its effect in eliminating methane, a far more potent greenhouse gas (how much of an offset this process provides I'm not sure and I'd love to find out. [Update] Marc from the Ethicurean explains it all in comments). In many ways, it's not a particularly high-tech approach and it's currently in common use in China and India - although unlike with the digesters in use in the developing world, the US biogas industry is attempting to significantly increase biogas content to almost pure methane. Because biogas can be produced and used on site as well as shipped via pipeline to power stations, it's theoretically possible for farms to become energy self-sufficient AND deal with excess manure. This isn't a magic bullet, of course, and in the future, farms are likely to use a lot more manure as fertilizer (remember Peak Phosphorus?). But, even in the post-CAFO world we all dream about, there will continue to be excess manure around. Indeed, this is exactly the sort of thing USDA chief Tom Vilsack means when he talks about developing "new technologies and expanded opportunities in biofuels and renewable energy."
