The study of Emperor penguins was conducted by lead author Stephanie Jenouvrier, above, a biologist with the Woods Hole Oceanographic Institution (WHOI), and colleagues at the Centre d’Etudes Biologiques de Chizé (French Centre National de la Recherche Scientifique), the National Center for Atmospheric Research, the Cooperative Institute for Research in Environmental Sciences, and the University of Amsterdam. (Photo courtesy of Stephanie Jenouvrier )

Full resolution (350 × 371)
The study of Emperor penguins was conducted by lead author Stephanie Jenouvrier, above, a biologist with the Woods Hole Oceanographic Institution (WHOI), and colleagues at the Centre d’Etudes Biologiques de Chizé (French Centre National de la Recherche Scientifique), the National Center for Atmospheric Research, the Cooperative Institute for Research in Environmental Sciences, and the University of Amsterdam. (Photo courtesy of Stephanie Jenouvrier )