No matter where you live or when you were born, you almost surely have at least a small amount of DDT stored in the fatty tissues of your body. Why? This notorious toxic pesticide, which led to the extinction of the American bald eagle in 1970 s, has long been banned in the U.S. and most other developed countries.But according to a new report by the World Wildlife Fund in Washington, DDT is still used in many developing nations, mainly because it’s so effective in controlling mosquitoes that carry the malaria parasite.