Farmers across the U.S. are facing challenges from extreme weather. From intense heat and drought roasting crops to rain-delayed harvests, many who grow the food we rely on are having to find new ways to adapt. For some, that means going high-tech, using sensors that can tell them when their plants need more water or fertilizer. WSJ’s Jala Everett looks into how modern sensors are changing the world of farming and how some sensors the size of “bandages” could deliver even more precise data from individual plants. Further reading:  Five Farming Technologies Tackle Climate Change Threats  Widespread Drought Creates Winners and Losers in U.S Agriculture  Harvesting Crews Hustle to Bring In Wheat Crop Hit by Drought, Late Rains  The Environmental Upside of Modern Farming  Learn more about your ad choices. Visit megaphone.fm/adchoices