John Church is an oceanographer with Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) Marine and Atmospheric Research and the Antarctic Climate and Ecosystems Cooperative Research Centre. For his sea-level research, he was awarded the 2006 Roger Revelle Medal by the Intergovernmental Oceanographic Commission (IOC) of UNESCO, was the recipient of a CSIRO Medal for Research Achievement in 2006 and won Australia’s Eureka Prize for Scientific Research in 2007.