While getting a mosquito bite is annoying, the tiny animal also takes the crown of the deadliest animal on earth, claiming around 725,000 lives per year. A team of scientists in China took on the job to battle the mosquito problem with an unusual approach, building a mosquito factory. Instead of targeting existing mosquitos, the scientists decided to sabotage the reproductive system of the insect. The factory breeds 20 million male mosquitoes infected by the Wolbachia bacteria per week.