Alice Roberts
Available on BBC iPlayer
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Costing the Earth Greening Fido
Could it be time to put an end to our pets? Alice Roberts asks if Fido can ever be green.
BBC Radio 4
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Costing the Earth Protecting the Past
Alice Roberts investigates the threats posed to our great historic sites by climate change
BBC Radio 4
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Costing the Earth The Three Peaks Challenge
Are charity mountaineers damaging our highest peaks? Alice Roberts reports.
BBC Radio 4
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Costing the Earth The Great Mineral Heist
Alice Roberts investigates the loss of vitamins and minerals from our staple foods.
BBC Radio 4
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Excess Baggage 30/05/2009
John McCarthy looks at the very earliest days of man's travel and little-known Surinam.
BBC Radio 4
