Professor Nathan Bindoff is a world renown physical oceanographer at the University of Tasmania’s Institute for Marine and Antarctic Studies. His research takes him on voyages of discovery where he documented the first evidence of changes in the Indian, North Pacific, South Pacific and Southern Oceans, and the earth's hydrological cycle from ocean salinity. He predicted fire catastrophes. His most recent work is studying the decline in oxygen content of the oceans. All of these global climate changes have been attributed to human activity. Nathan Bindoff is one of the lead authors contributing to the Intergovernmental Panel on Climate Change (IPCC) reports that are informing world leaders on climate policy.