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Coffee under threat of extinction: is this the bitter end?
Are we about to run out of coffee? Nearly all the 10 million tonnes of coffee beans consumed worldwide come from two plant species: arabica and robusta. Both are critically threatened by climate change.Scientists at the Royal Botanic Gardens, Kew, in London have been looking into the viability of using a new bean to save our morning cuppas.Guest: Dr Aaron Davis, Senior Research Leader of Plant Resources at the Royal Botanic Gardens, Kew
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