ways. these have been tested in different ways against bacteria. we have a number that have very high activity against bacteria infections and these are followed up. >> from leaf cutter ants to sea sponges and rows of jars with preserve mad reen life, it looks like the stuff mad scientists dream about. this is the new face of antibiotics and the hopeful legacy of the pharmacy project and others like it around the world. >> the drive to do this kind of work has always been the discovery of new medicines for diseases. but secondly, it's always very exciting when you get to this stage where you're the first person to see something. you're the first person to see the bacteria and the very first person to identify the structure of a new molecule that has the potential at that moment to be treatment for a difficult disease. >> so what the next time a doctor prescribes -- antibiotic, ask yourself if you need it or not.