Like the famed white bear which roams the Arctic ice, the resolutely Antarctic penguin is deemed a “polar” animal. The word polar, when you think about it, is a suggestive word: it suggests great and opposite extremes. True to the word, the penguin is a warm-blooded creature that lives in the coldest of climates. The bird is black and, at once, white. Within this language of opposites, would it be fair to say the penguin is also night and day?