Chimps soak up alcohol using leaves as sponges

Wild chimpanzees in the west African country of Guinea discovered a free treat in raffia palms tapped by local people to extract a sweet, milky sap which then ferments into an alcoholic drink.  The apes scrunched up leaves in their mouths, moulding them into spongy pads that they then dipped into the sap-gathering container, which villagers attach to the tree near its crown.