Wednesday, April 22, 2009

Yielding to Ideology Over Science


Yielding to Ideology Over Science : Why don't environmentalists celebrate modern farming on Earth Day? - Reason Magazine
One might think that environmentalists would celebrate the accomplishments of modern farming on Earth Day. After all, the biggest way humanity disturbs the natural world is in how we produce food. Agriculture uses up more land and water than any other human activity. To the extent that we want to preserve biodiversity and protect natural areas, boosting agricultural productivity is the most vital thing that we can do.

Since 1960 global crop yields have more than doubled, with the benefit that the area of land devoted to producing food has not increased very much. If farmers were still producing food at 1960 levels of productivity, agriculture would have had to expand from 38 percent of the earth's land to 82 percent to feed the world's current population. This enormous increase in yields is the result of applying more artificial fertilizers, breeding higher yielding crops, a wider use of pesticides and herbicides, and expanding irrigation. More recently, advances in modern biotechnology have also contributed to boosting yields. However, last week, the Union of Concerned Scientists (UCS) released a new report, Failure to Yield: Evaluating the Performance of Genetically Engineered Crops, by its senior scientist Doug Gurian-Sherman that tries to make the case that modern crop biotechnology should be largely abandoned because it has failed to increase agricultural yields.

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