According to Olivelle, purity-impurity is discussed in the Dharma-sastra texts, but only in the context of the individual's moral, ritual and biological pollution ( eating certain kinds of food such as meat, going to bathroom ).
12.
"Biological pollution is probably going to be one of the major environmental problems of the 21st century, " he said, and the United States has missed a unique opportunity in Cartagena to confront the risks of biotechnology before a major disaster.
13.
Largely because of the spread of the European starling, a 2007 article in the " San Francisco Chronicle " ( deriding the introduction of fallow deer to the Point Reyes National Seashore ) called the society " the canonic cautionary tale of biological pollution ."
14.
But Arthur Shur's potatoes are in the vanguard of one of the fastest and most controversial transformations of American agriculture since the rise of pesticides after World War II . Depending on whom you believe, they offer either the best hope ever to feed the world or the danger of a new era of biological pollution, threatening the health of anyone who ingests them.
