Environment
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Katy Payne: Elephant songs
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Mark Lynas: Environmental journalism
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Carl Safina: Fishing with long lines
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Paula Kahumbu: Conservation 2.0
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Eben Bayer: Bio-packaging
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Tevis Howard: Microforestry
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John Priscu: Below the Antarctic ice
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John Thackara: The end of endless growth
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Christian Nold: Bio mapping
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Cary Fowler's seeds
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Sarah Otterstrom: Biodiversity conservation
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Stefano Merlin: Renewable waste
