European scientists have created a portable electro-chemical biosensor that detects and identifies traces of toxic chemicals such as pesticides and antibiotics in food including milk, produce, water and orange juice. The biosensor can detect even small amounts of atrazine, a commonly used herbicide in conventional agriculture in the United States, antibiotics used to promote the growth of animals raised for food and sulphanilamides used to treat sick animals in factory farming. Now that's a wonderful invention that should keep factory farms and food manufacturers honest.