The plants that provide most of the world's coffee supply emerged around 600,000 to 1 million years ago when two other species of coffee cross-pollinated in the forests of Ethiopia, scientists have discovered.
About 60% of the world's coffee supply is sourced from Coffea arabica plants, which now grow in tropical regions across the world New research, published April 15 in the journal Nature Genetics, has revealed when and where the original C. arabica plants likely developed.
