What is a pesticide? A pesticide is a mixture of chemical substances used on farms to destroy or prevent pests, diseases and weeds from affecting crops. According to the USDA, 45 percent of the world’s crops are lost to damage or spoilage, so many farmers count on pesticides. If you’re eating non-organic celery today, you … Continue reading Dirty Dozen: The 12 Most Pesticide Contaminated Fruits And Vegetables