TAILIEUCHUNG - ENVIRONMENTAL POLITICS CASEBOOK: Genetically Modified Foods - Section 5c

Tham khảo tài liệu 'environmental politics casebook: genetically modified foods - section 5c', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Environmental Advocacy Documents 211 Threats to the environment When biotech corporations boast that genetic engineering can do wonders for the environment we would do well to consider the source. After all some of these companies were behind the development of such deadly pesticides as DDT. These pesticides it was promised would help the environment instead they turned into environmental disasters. Environmentalists have many concerns about GE foods. Here are a few 1. The plight of the Monarch butterfly Cornell University researchers have found that GE com may be deadly to the Monarch butterfly. In laboratory tests in the spring of 1999 the scientists found that nearly half of the Monarch caterpillars that ate milkweed leaves dusted with GE corn pollen died within four days. The surviving Monarchs that ate the genetically mutated corn pollen were much smaller and had smaller appetites than the control Monarchs which ate normal corn pollen or no pollen at all. Already GE com is being grown on 20 million acres of American farmland right in the heart of Monarch s migratory route between Mexico and Canada. And scientists worry that there may be additional surprising scientific discoveries down the road. 2. Increased pesticide pollution Many of the new GE crops such as Roundup Ready soybeans are designed to allow farmers to spray heavier doses of pesticides on their land. These pesticides inevitably will find their way into our water and food supply endangering humans and wildlife. New Scientist magazine reports that many farmers that have converted to GE production use as many pesticides as their conventional counterparts while some GE farmers now use more pesticides. And one of Britain s leading safety experts Malcolm Kane former head of food safety at the supermarket chain Sainsbury s has revealed that the limits on pesticide residues in soy had been increased 200-fold to help the GE industry. 3. Genetic contamination of the environment when Scottish Parliament .

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