This unit presents a range of current advanced soil science topics in areas of sustainable soil resource management. The unit, delivered entirely on-line, provides students with an interactive learning environment to explore and expand their understanding of soil science issues in the context of prior units. Students are encouraged to develop and share their knowledge in facilitated forums. Potential topics include nitrogen use efficiency, global phosphorus reserves, carbon sequestration, soil pollution and rehabilitation, soil ecology and other issues of significance in climate, population and sustainable resource use debates worldwide.