Landfills, long reviled by the environmental community, have in recent years benefited from numerous subsidies for landfill gas energy. This May 2003 NRDC paper looks at the health impacts from burning landfill gas, the sustainability of landfill gas, and the ability of the subsidies to promote landfilling over recycling. Landfill gas is a threat to human health and global warming. Energy projects reduce these impacts, but landfill gas is not renewable. As a result some subsidies are warranted, but they must be targeted carefully.