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Food production will have to be doubled over the next 35 years to feed a global population of 9 billion in 2050, scientists said during an annual science conference. The volatility of rainfall, more droughts, and rising temperatures affect crop yields, according to Jerry Hatfield, director at the National Laboratory for Agriculture and the Environment. Reducing consumption waste and decreasing red meat consumption could help, however, as reducing the size of herds decreases their environmental impact, James Gerber, an agricultural expert at the University of Minnesota, said.
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