Climate change threatens coffee – but we’ve found a delicious wild species that could help save your morning brew

By Aaron P Davis, Senior Research Leader, Plant Resources, Royal Botanic Gardens, Kew

The world loves coffee. More precisely, it loves arabica coffee. From the smell of its freshly ground beans through to the very last sip, arabica is a sensory delight.

Robusta, the other mainstream coffee crop species, is almost as widely traded as arabica, but it falls short on flavour. Robusta is mainly used for instant coffee and blends, while arabica is the preserve of discerning baristas and expensive espressos.

Consumers may be happy, but climate change is making coffee farmers bitter. Diseases and pests are becoming more…

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