The duo visit the garden and look at the animals that live there.
The subject of this edition is the underwater world.
Autumn: A look at murder in Macbeth, and the characteristics of tragedy.
Amateur musician Marc Kelly finds out how to make music with computers. (W)
This edition looks at jobs in uniform. Sarah visits Winchester prison.
Anna Ryder-Richardson investigates high-rise living.
In this programme a pathologist talks to a fan of television detectives.
Chemistry writer John Emsley introduces presenter Angela Lamont to organic chemistry.
A look at extreme weather conditions in Britain over the last century.
This edition features computer genius William Latham.
Rory McGrath and his team undertake an historical investigation in Weston-Super-Mare.