Forty years after he helped rescue the world from growing famine and a deepening gloom over the future of food supplies, Monkombu Sambasivan Swaminathan is once again agitating for revolution -- this time a perpetual one. The 82-year-old scientist, dubbed here the father of the Green Revolution for helping development a hybrid wheat seed that allowed Indian farmers to dramatically increase yields, says the current food crisis offers the world a chance to put farmers on the right road to unending growth.