Major environmental challenges, due to climate change, are having a profound impact on humankind. Rising seas and temperatures are causing increasing flooding and melting of ice and permafrost soils. The impact of these processes on biogeochemical cycling of trace elements in soils and water is not well understood. For example, how do rising seas, that cause inundation of soils with saline water, followed by retrenchment, and salinization of groundwater affect cycling of redox active elements such as arsenic (As) and chromium (Cr), as well as other trace elements. Under changing climatic conditions, how will sequestration of C by oxide minerals be impacted, and resultant mobility of trace elements? This presentation will explore these questions, and others, over a range of spatial and temporal scales.