Have you guys heard about the Dirty Dozen and Clean 15 lists released by the Environmental Working Group?
Body + Soul published a great article about the merits of buying organic especially for products listed on the Dirty Dozen because these items tend to be laden with pesticides. You can also download the handy lists there.
Dirty Dozen : apples, capsicum, blueberries, celery, grapes, cucumber, lettuce, nectarines, peaches, potatoes, strawberries and spinach.
Clean 15 : asparagus, avocado, cabbage, rockmelon, kiwifruit, eggplant, mushroom, grapefruit, onion, mango, peas, watermelon, sweet potato, corn and pineapple.
With this information in hand, be sure to buy organic or bio-dynamic if you can!