How researchers are pinning their hopes on a climate-resilient coffee species.
BBC business reporter
The industry is now pinning hopes on another coffee species to sustain production - liberica. Native to western and central Africa, commercial cultivation is centred on the Philippines and currently accounts for only 2% of the global coffee bean harvest. On the question of what happens if the coffee market doesn't adapt, Dr Davis says soberly: "We're going to have less coffee and prices will go up, but the real hit and the real jeopardy is for farmers."Romulo, a Filipino café in west London, serves barako coffee - made from a blend of liberica and arabica beans. It's traditional in the Philippines.
However, researchers are focusing on a subspecies of liberica with a smaller bean - called excelsa - which they believe has an improved flavour profile.Coffee traders, middlemen connecting farms to retailers, are under immense pressure to meet rising demand. Volcafe is one of the world's biggest traders, handling roughly 600 million kilograms of coffee a year.
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