We hear so much these days about cancer threats from exposure to trace amounts of pesticides and industrial chemicals in our food, water, cosmetics, sleepwear, and in playgrounds. This constant drumbeat of what invariably turn out to be miniscule or non-existent threats confuses many people, and diverts attention from what are the major known, avoidable causes of cancer and what we can do to reduce our chances of developing cancer. Read more at Forbes.