Gentically Modifed Mosquitoes Battle Dengue Fever in Brazil

In the fight against disease-bearing mosquitoes, residents in the Brazilian city of Piracicaba have a new ally: mosquitoes. A biotech company has released into the wild an army of genetically modified male mosquitoes that will never see their children. That's because these mosquito dads pass on a gene to their offspring that causes them to die before they ever mature. It's a cutting-edge battle tactic that aims to reduce the population of mosquitoes that can infect people with dengue f