Caffeine is produced by approximately 30 of the world’s 300,000 or so different species of flowering plants, estimated Todd Barkman ... Indeed, studies have shown that coffee (Coffea arabica) and tea ...

By Marta Zaraska Photographs by Emily Mott Stenophylla is a coffee plant, not a criminal ... needs are supplied by just two species: Coffea arabica and Coffea canephora, widely known as robusta.

Climate change has added further strain, threatening the delicate temperature balance required by the Coffea arabica plant. This growing pressure has inspired physicists at the University of ...