Costing the Earth

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Factual: Science & Nature: Nature & Environment

Fresh ideas from the sharpest minds working toward a cleaner, greener planet

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Costing the Earth: CSI Oceans

CSI Oceans

BBC Radio 4 - Costing the Earth, CSI Oceans

Anna Turns investigates what’s killing sea mammals.

Anna Turns investigates what's killing sea mammals with scientists who autopsy dolphins, porpoises, and whales washed up on our beaches.

Anna Turns investigates what over 30 years of post mortems on dolphins, porpoises, and whales has revealed about the state of the seas. The Cetacean Strandings Investigation Programme in England and Wales, and the Scottish Marine Animal Strandings Scheme, have carried out thousands of autopsies. Anna goes into the pathology lab with Rob Deaville from ZSL as he examines a Harbour Porpoise for clues about how it died, and how it lived. As Anna finds out from toxicologist Dr Rosie Williams and veterinary pathologist Dr Andrew Brownlow, evidence from post mortems shows animals' ability to survive and breed is threatened by pollution from long banned but peristent chemicals, known as PCBs. To find out how these chemicals could still be leaching into the environment Anna travels to the Thames Estuary with Professor of Environmental Geochemistry Kate Spencer.  

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