The Super Smell Sensor

New Zealand scientists are using special smell sensing proteins harvested from the cloned cells of insect antennae to develope a super smell sensor. They hope to use them as part of a device which could be use to detect everything from the ripeness of fruit, to algae in drinking water and signatures of disease in human breath. Kathryn Ryan talks to Dr Andrew Kralicek, the head of Plant and Food Research's molecular sensing team which is working to develop the sensor