Ana Mateos and Jesús Rodríguez, scientists at the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), have published a paper in the journal Palaeogeography, Palaeoclimatology, Palaeoecology showing that large herbivore carrion, a resource that had formerly been abundant and accessible to hominins, became scarcer at the end of the Early Pleistocene due to changes in the Iberian fauna.