When a shopper in New York, say, plucks a Milky Way bar from a grocery store shelf, that shopper becomes the final link in a long chain that might have started on a patch of land in Ghana, where a tropical forest recently stood.
When a shopper in New York, say, plucks a Milky Way bar from a grocery store shelf, that shopper becomes the final link in a long chain that might have started on a patch of land in Ghana, where a tropical forest recently stood.