Traditionally grown cotton is a nasty business. The last figures I saw were that cotton uses 1/4 of the world's herbicides. They use it to nuke the leaves before harvesting the cotton. The chemicals flow through the fields and make the workers sick. It's often grown in arid places (like Arizona) where water is scarce. Now go to your pantry and see how many products have cottonseed oil. Those seeds got soaked by the spray. Are your chips not so tasty all of a sudden?
But efforts are underway to promote organic cotton. The non-profit Solidaridad rates retailers and manufacturers on their cotton buying practices and policies. You'll never guess who came out on top.