Countryfile - 08/03/2009

John Craven heads to Slimbridge in Gloucestershire to mark the centenary of the birth of naturalist and conservationist Sir Peter Scott, and Miriam O'Reilly gives a helping hand to the Wiltshire Fire Service as they demonstrate an improved technique for rescuing large animals from ditches and mud. The students from the Royal Agricultural College in Cirencester take part in the annual tractor pull, and could our food supply be jeopardised by a chronic shortage of food scientists?