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BBC Radio 4 is a radio channel that started transmitting on the 30th September 1967. It replaced BBC Home Service.

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Costing the Earth

Factual: Science & Nature: Nature & Environment

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

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Costing the Earth: The Deepest Lake on Earth

The Deepest Lake on Earth

16/04/2013

BBC Radio 4 - Costing the Earth, The Deepest Lake on Earth

Exploring the environmental secrets of the deepest lake in the world with Tom Heap.

Tom Heap tells the story of an expedition to uncover the environmental secrets of the deepest lake in the world, Lake Baikal.

Russia's Lake Baikal is the oldest and deepest lake in the world, containing 20% of the world's unfrozen fresh water. Dr Anson Mackay from University College London is one of a team drilling through the bed of this extraordinary body of water. The cores of sediment that they pull up from the depths will tell us not just about the environmental history of Baikal, they'll tell us about 1000s of years of global climate change. Today the lake is threatened by pollution, rising population and Mongolian gold mining. Can the story of the lake's past help preserve it for the future?

Tom Heap tells the story of the expedition as we join Dr Mackay and his colleagues to piece together the history of Baikal and search for clues to the future of all freshwater on Earth.

Intelligent speech, the most insightful journalism, the wittiest comedy, the most fascinating features and the most compelling drama and readings anywhere in UK radio.

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