京都淡水フグ研究所

This rice field in Indonesia has fish swimming in it, and that's a good thing. The fish eat pests and weeds, their waste fertilizes the rice, and their movement aerates the soil. Science confirms it works better: rice-fish systems use 68% less pesticide and 24% less fertilizer than conventional monoculture, while producing the same or higher rice yields. Farmers also harvest the fish for extra income and protein. This 2,000-year-old practice nearly disappeared during the Green Revolution. Bonus: in one part of Indonesia, adding fish dropped malaria rates from 16.5% to nearly zero, because the fish ate the mosquito larvae. More food. Less poison. Extra protein. Built-in disease control.