Different beans mean different-tasting coffees; divergences that have been put down to climate, fertiliser use and type, how close to the equator plantations are and at what altitude. But scientists in the homeland of espresso have filtered out secrets in coffee bean genes that further explain the differences. The Italy-based team, funded in part by coffee giants illycaffè SpA and Lavazza Group, used the latest in gene-sequencing technology to get at information that was "previously inaccessible