Rice’s Heat Limit Threatens Global Food Supply | Portland News

Portland News Today | 2 Min News | The Daily News Now! · Jul 18, 2026 · 2m

Rice is in trouble as climate change pushes temperatures beyond what the crop has ever endured—new research shows rice struggles when temps exceed 82°F year-round or 91°F in summer, and projections warn Asia’s rice belts could face these extremes 10 to 30 times more often by century’s end. With rice feeding over a billion, this isn’t just academic—it’s a threat to livelihoods and global food security. Even the toughest rice strains may buckle under unprecedented heat, as photosynthesis falters. India’s recent export halt due to heatwave losses is just the start. While global emissions cuts…