In recent decades, the Earth Sciences have undergone major changes, stimulated in part by the reinterpretation of Earth history and improved understanding of the processes that modulate modern and ancient environments.  The past 15 years have been especially exciting, as the interconnectedness among all Earth systems — air, water, solid Earth, and the biosphere — has come into sharper focus. Cognizant of these changes (and leading some of them), Rensselaer's Earth and Environmental Sciences faculty provide instruction in modern Earth Sciences that is both far-reaching and relevant, addressing key topics ranging from environmental contaminants in local waterways, Earth's long-term climate history, to the conditions on ancient Earth that gave rise to life.