Thanks for the comment, jyokela, but that's not really true as a general matter. If you put your car on my property, I can have it removed whether it's doing me any harm or not. If the law showed the appropriate amount of respect for property rights, it would treat pollution the same way. In my neighborhood, for example, there are some people who like to spray their yards for mosquitos, and others who think the mosquito spray is toxic. The latter typically want our town council to enact an ordinance banning mosquito sprays and other pesticides. That regulatory strategy sets up a big fight in which someone has to decide for everyone. An environmental strategy based on property rights would instead let neighbors work this out, choosing negotiated consent (or where consent is denied, a containment strategy).