Presented by Tony Soper with Brian Leith the last programme in a series of weekly looks at wildlife and the issues affecting the living world.
HRH The Duke of Edinburgh talks to TONY SOPER about his views on wildlife and conservation.
A Hard Day's Night: Today is the longest day; in the Land of the Midnight Sun how do animals know when to sleep?
Earthquake: new light on the Chinese myth that animals can give advance warning of earthquakes.
Producer ROBIN HELLIER Editor ANDREW NEAL BBC Bristol