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Researchers Explore Environmental Impacts of Genetically Modified Crops

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Genetically modified (GM) crops are widely used around the world, but their effects on the environment need to be better understood.

Recent research, published in Science on August 30, 2024, takes a look at common genetic modifications in four crops: soybean, corn, cotton, and canola. Although GM crops can produce more  and profits, they can require changes in agricultural practices that could inadvertently impact the environment. For example, farmers may increase  as crops become more resistant to herbicides or insect pests.

"Increasing land productivity in the form of greater crop yields can make agricultural land more profitable overall, which can encourage agricultural expansion," explains co-author Eduardo Souza-Rodrigues, an associate professor and associate chair with the Department of Economics at University of Toronto Mississauga.

"However, increased supply may then reduce crop prices, which decreases the conversion of additional land to agriculture elsewhere. These changes have the potential to cause deforestation, pollution,  and impacts to , and biodiversity."

"Although we have made progress in understanding the impact GM crops have on our environment, there are many more uncertainties that need to be studied to support good farming practices that are better for the environment," Souza-Rodrigues continued.

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