"Every day, I try to decipher the signals my plants are sending me. I want to understand what influences them," says Takis Konstantopoulou. Grapefruit, oranges, olives and lemons grow in his fields. "I live on the farm with my mother, wife and two children. Naturally, we eat what we produce. I eat fresh grapefruit every day, which helps with my diabetes. Now that I'm getting older, my son takes care of the fields with the help of seasonal workers."