We visit Europe’s newest genetic research centre, The Francis Crick Institute. We look at how this new London based international centre brings together scientists from many disciplines to explore the human genome in work to pinpoint the mechanisms of genetic disease. We discuss how this research will help us understand the genetic basis of diseases such as cancer and HIV. And we look at some fish, many many fish in tanks. Find out why they are being moved from one lab to another and why they too have a role in understanding human genetics. The Science Hour was presented by Gareth Mitchell with comments from Roland Pease Producer: Julian Siddle Photo: The Francis Crick Institute, courtesy The Francis Crick Institute.