Katherine Ryan, Esther Rantzen, Angela Scanlon, Mike Dilger

Katherine Ryan joins Matt Baker and Alex Jones to talk about her stand up tour Kathbum and Esther Rantzen talks about 30 years of ChildLine. Angela Scanlon meets the farmer who stopped Rihanna stripping off in his barley field and Mike Dilger visits a huge bloom of plankton off the coast so big it's visible from space.