A few days ago my daughters and I met some friends at a local playground. While not exactly warm out--this is New England, after all--it was sunny and pleasant. My two-year-old grabbed my hand and tried to bring me down to the nearby pond, saying "I want to see the ducks." I explained that the pond was frozen and that it was too cold to see any ducks. She looked confused for a minute, and a bit concerned; and then her face brightened with hope as she asked, "Penguins?"