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Scientists in Florida will 750 million genetically modified mosquitoes into the wild. The aim is to the number of existing mosquitoes that diseases like Zika virus, yellow fever and dengue fever. The plan is to release the mosquitoes next year in the Florida Keys. This a long chain of tropical islands 170km south of the southern tip of Florida. The modified mosquitoes all male. They carry a protein that will kill off any female offspring before they biting age. It is only female mosquitoes that on blood and bite humans. Males only feed on nectar from flowers. Over time, scientists the disease-carrying population of mosquitoes in the area will .

Environmental groups not happy with the plan to release the genetically modified mosquitoes. One group it a "Jurassic Park experiment". It said Florida "a testing ground for mutant bugs". Many environmentalists that the project could damage to local ecosystems that could never reversed. They say the experiment could even create a new super-species of mosquito that resistant to insecticides. The environmental group Friends of the Earth said: "The release of genetically engineered mosquitoes will needlessly Floridians, the environment and endangered species at risk in the midst of a pandemic." The company the mosquitoes said there no risk.