The New Heroes Episodes on PBS

“Technology of Freedom” (Part 2 of four) profiles social reformers whose better mousetraps are lifting people out of poverty around the world. In Kenya, Martin Fisher and Nick Moon's manually operated irrigation pumps can increase farmers' incomes tenfold. Agronomist Fabio Rosa has made electricity affordable for rural Brazilians. And Indian eye surgeon Govindappa Venkataswamy and American businessman David Green have teamed up to put eyeglasses and cataract surgery within the reach of the poor.