Why a Bill Gates-backed insect factory releases 30 million mosquitoes every week
Deep inside Medellin, Colombia, scientists are breeding millions of mosquitoes every week and then releasing them into the environment on purpose. At first, that may sound strange, especially because mosquitoes are known for spreading dangerous diseases. But researchers say these insects are actually being used to help stop illnesses like dengue, Zika, chikungunya, and yellow…