Welcome to Ethiopia's fly factory - One of the poorest countries in the world has an ambitious plan to eliminate the tsetse fly. But some scientists say it's a waste of money

One of the poorest countries in the world has an ambitious plan to eliminate the tsetse fly. But some scientists say it's a waste of money. The scheme sounds simple produce as many as a million male flies a week, make them sterile by blasting them with radiation for a couple of seconds, then release them in tsetse infested areas, making sure they out number wild males 10 to 1. Critics of the plan say that the money could have been better spent on cheaper and simpler ways to fight tsetse, such as insecticide spraying.