Current experiments are focused on tomatoes, lettuce and other small-scale crops, with hopes to extend to high-calorie crops like grains and sweet potatoes in the future. Gratian Veres/500px/Getty Images In 2023, some 700 million people around the world faced hunger, a crisis made worse by climate change, conflict and economic instability, according to the United Nations. As the food system strains under these pressures, new technologies are emerging to address these global challenges. One such ...