Environmental magnetism aims to characterize the variability inherent in the environment. We use magnetic methods to aid in the interpretation of the environment, operating both at the present day and in the past. With careful targeting these techniques can potentially yield higher discriminatory power and resolution than can be afforded by more traditional characterization methods. The scope of environmental magnetic applications is very broad and rapidly spreading. Initial studies were concerned with lake sediment sequences but common applications now include core correlation, sediment tracing, geological delineation and mapping, environmental change and reconstruction and studies of paleoclimatic, paleoseismic, paleoenvironmental and diagenetic variability. Almost every project currently underway in the P-mag lab includes an environmental magnetic component. For example, we are fingerprinting suspended sediments draining the Greenland Ice Sheet into the North Atlantic Ocean. Additionally, we are using a series of deep-sea sediment cores from the North Atlantic to trace the relative effects of ice sheets and changes in bottom water circulation during the Holocene and into the last deglacial period.