Journalists think it means something they write. Children think it means Mother Goose. This post from Blogfather Bora Zivkovic at Scientific American examines the differences between narratives and inverted pyramids; different types of science stories ("cool," "relevant," "fishy"); and what the future holds: "My bold prediction is that the length of a typical article will go in two directions: super-short, just the gist of the news, like a tweet; or super-long."
