American pumps up Third World farmers' income

By Frank Greve | McClatchy Newspapers

If there's a limit to what one person can do about Third World poverty, Paul Polak hasn't found it. For 25 years, he's been the Johnny Appleseed of the treadle pump, a simple foot-powered irrigation device that's enabled millions of farmers making $1 a day in places such as Bangladesh and Zambia to produce bigger crops and earn more.