Cocoa pods in Ivory Coast, one of the world's top producers of cocoa. Climate models suggest that West Africa, where much of the world's cocoa is grown, will get drier, which could affect supply.
Issouf Sanogo/AFP/Getty Images
Rows of potted cocoa plants from around the world. Before a cocoa variety from one country can be planted in another, it first makes a pit stop here, at a quarantine center in rural England.
Courtesy of Dr. Andrew J. Daymond