Gene drives at the wheel
Tina Hesman Saey discussed the power of a new gene-editing technique to boost the development of gene drives in “Gene drives unleashed” (SN: 12/12/15, p. 16). Gene drives have the potential to eradicate insectborne diseases, Saey wrote, or remove invasive species from non-native environments. But the tremendous possibilities of this technology had several readers worried.
Ellen Gryniewicz wanted to know what effect a gene drive–engineered mosquito might have on the bats and birds that eat the insect. “How often is this driver going to be incorporated into the predator’s