In the Netherlands manure from pigs poses a major ecological threat, defiling water supplies with excessive nitrates and acidifying local soils.

VERMIN. THE WORD reminds most people of cockroaches scuttling across kitchen floors and rats skulking in dark basement corners. But to Jeremy Rifkin, the environmental movement’s most prominent polemicist, vermin are big, brown-eyed ungulates that graze the rolling countryside, chew their cud and moo. In his controversial new book, Beyond…