"Little Brown Nut starts with a large fruit falling from the tallest tree in the Amazon rainforest. Inside is a little brown Brazil nut, surrounded by 20 others. It sits and waits for an agouti, a rodent with teeth so strong that it can free the nut from its hard casing. The story of the Brazil nut tree and the agouti is told clearly and carefully, with facts about germination, photosynthesis, seed dispersal. The narrative progresses in a way that...