The Green Revolution transformed agriculture into the industrial model we see today. Through the selective breeding of the most productive plants, high-yield varieties of crops were developed that more than doubled production per acre (when grown with inputs like fertilizer and pesticides). This increased food supplies worldwide but brought with it a new set of problems.
Neil W Zoglauer/Moment/Getty Images
Mmphotos/Photodisc/Getty Images
Noel Hendrickson/Digital Vision/Getty Images