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A new study determines that U.S. taxpayers are subsidizing the Gulf of Mexico dead zone. This is an area of coastal waters -- visited in MoJo's The Fate Of The Ocean -- where dissolved-oxygen concentrations fall to less than 2 parts per million every summer. According to a paper published at Environmental Science & Technology Online, these findings bode poorly for the Gulf, as more and more acres of land are planted with corn to meet the growing U.S. demand for alternative fuels. Farmers in areas with the highest rates of fertilizer runoff tend to receive the biggest payouts in federal crop subsidies, says Mary Booth, lead author of the paper. What's more, they have fewer acres enrolled in conservation programs compared with other parts of the Mississippi River basin. Agricultural nitrate loading could be reduced substantially if farmers took just 3% of the most intensively farmed land out of production.JULIA WHITTY