Mary Pope Osborne - Eve of the Emperor Penguin

The 40th of Mary Pope Osborne's popular Magic Tree House series
JACK AND ANNIE continue their quest for the secrets of happiness - secrets they need to save Merlin. This time, the Magic Tree House takes them to the one continent they haven't visited before: Antarctica! What can they hope to learn about happiness in such a barren place? Only the penguins know for sure . . . Jack and Annie are about to find out!