Inspired by his grandparents, who were apple farmers in China, Charlie Wu got the idea to apply technology to agriculture while studying computer science at Cornell University, a top agriculture school. “I got to meet fruit professors who are the best in the world at what they do,” Wu told TechCrunch. “Through talking to them, I realized even the largest farms in the nation basically have no idea what is actually growing out in their fields.” He dropped out of Cornell, became a Thiel fellow, and...