This week's programme in the series on Man and Science today.
"I like these large spiders. I think because they are large. They are very fine looking creatures and you can get very attached to them. They can be kept as pets." - Douglas Clark, Department of Zoology
The Natural History Museum is a place of enthusiasts: the hundreds of children who swarm through the public galleries each day and the 350 naturalists employed by the museum. Their job is to look after and do research on one of the largest collections of living organisms in the world.
Tonight's programme is a chance to look behind the scenes of a well-known institution. It is also about the public who visit it and the people who work there.
(Noah's Ark - in the middle of London!: see page 9)