Conjecture about the causes, magnitude, and dramatic geographic variability of global sea level change over the past century has provoked contention within the scientific community and misinformation in the general public. Jerry Mitrovica will provide an overview of the many datasets, including archaeological evidence, geological observations, and satellite-based measurements that have confirmed both the anomalous nature of recent sea level change and its inexorable acceleration. He will demonstrate how the geographic variability in sea level can be used not only to estimate the average sea level change worldwide, but also to “fingerprint” the sources of this change.