Author and illustrator Peter Sís has written a children's book about Charles Darwin called 'The Tree of Life'. Follow the link to see an animated excerpt. Like many children's books, it's a good place for adults to learn, too. The cover of the book is especially beautiful. Many thanks to Serial Susan for sending me to his work.
This lovely website includes a Tibetan maze, with more than one pathway to the butterfly in the center. See if you can find your way there!