Genetically modified (GM) crops are widely used around the world, but their effects on the environment need to be explored more. New 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 yield and profits, it can lead to changes in agricultural practices that could inadvertently impact the environment. For example, farmers may increase pesticide use as crops become more resistant to herbicides or insect pests.