Paul Goldberg is a geologist and Professor in the Department of Archaeology, Boston University. He has carried out geoarchaeological research ranging from Quaternary landscapes and associated archaeological sites in the Near East, California, and Texas, to cave sediments in China, South Africa, Europe, and the USA.

Richard I. Macphail is a Senior Research Fellow atUniversity College London, investigating archaeological sediments, soils, and occupation deposits across Europe and the USA. He was a researcher for English Heritage for 20 years, and is currently a Research Fellow at Boston University and was professor invité at Université de Tours.