Best of Natural History Radio Folgen

The spined loach is a small freshwater fish that spends most of the time buried in the silt of riverbeds. It is believed be in the UK as a result of the melting from the last Ice Age when the UK was connect to Europe. After the Ice Age rescinded, the ocean water levels increased for a time before decreasing enough to essentially separating some of the species from the rest that live in Europe. Brett Westwood joins Environment Agency Fisheries Officer Andy Beal and his team conducting a survey of this secretive and rare animal at Morton's Leam; a 15th Century river artificial course of the River Nene in Cambridgeshire. Produced by Jamie Merritt

The final programme in the series recorded in the Natural History Museum in London. Four experts from different fields chose an object that symbolises our relationship with nature.

When Brett Westwood began a wildlife diary at the age of 15, little did he think that he'd still be writing notes, nearly 40 years later about the same local patch in North Worcestershire. The River Stour has its source in the industrial Black Country and flows through Brett's local patch on its way to the Severn, about 9 miles away. Today, although it is polluted, the river is far clearer than in years gone by, thanks to rigorous controls on pollutants. With their absence, fish have returned and damselflies such as the white-legged damsel which is sensitive to pollution, skim across the surface.