The application of political ecology in the work of anthropologists and geographers differs. Euhemerist accounts are generally those found in writers on antiquarian subjects, geographers, scholars, and historians. It is one of the terms used by geographers and landscape historians to classify settlements. Geologists use the term "continent" in a different manner from geographers. The marsh is described by the geographers and historians of the early Roman empire. This was the first expedition to circumnavigate the globe with professional naturalists and geographers aboard. The Geography in the News website is available for Schools Members and Young Geographers. Today, it is the leading centre for geographers and geographical learning. From the 1950s, most U.S. geographers divided the Americas into two continents. The model has been challenged by many contemporary urban geographers. Rhages was described in detail by 10th-century Muslim geographers. It was later regarded as belonging to Iraq by Arab geographers. The earliest written records of Ireland come from classical Greco-Roman geographers. As a consequence Phoenix became a textbook case of urban sprawl for geographers. Annals of the Association of the American Geographers.