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This unit is an introduction to global environmental change and provides a wide range of examples how humans change there environment. The module covers the following aspects of global change: Tropical deforestation, desertification, sea-level rise, and climate change. We will explore the evidence provided for each of these aspects of global change and discuss their projected impacts. The aims of this unit are: 1) to consider past human impact in prehistoric and historical times; 2) to take selected human impacts on environments today and investigate the intentional and unintentional human modifications to the environment; 3) to review the likelihood of future human-induced global environmental change and the predicted effects; 4) to introduce students to recent methods in geography used to monitor and model aspects of global environmental change.