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The earth's climate is dynamic and complex. Large changes in climate are recorded in ice cores, ocean mud and over the last two centuries, instrumental records. However, to understand the large scale patterns in climate and their changes and drivers, climate models are not only useful, but increasingly necessary to make skillful predictions for the future. Though critically important, understanding the role of climate models is often misunderstood or distorted. Climate scientist Gavin Schmidt discusses how climate models are not only useful, but increasingly necessary. Recorded on 01/10/2018. (#33355)