Scientists in Japan are mining DNA to try to make the country’s famous Koshihikari rice resistant to heat, after a broiling summer ravaged the crop. Rice, Japan, Agriculture and Farming, Global Warming, Heat and Heat Waves, Prices (Fares, Fees and Rates), Niigata Prefecture (Japan) Scientists in Japan are mining DNA to try to make the country’s famous Koshihikari rice resistant to heat, after a broiling summer ravaged the crop. NYT > Business