Which human activities are changing our climate, and does climate change constitute a major problem? We will investigate these questions through an introduction to climate processes and an exploration of climate from the distant past to today. We will also consider the impact of past and ongoing climate changes on the global environment and on humanity. Finally, we will draw on climate science to identify and evaluate possible courses of action. Intended to be accessible to students not concentrating in science or engineering, while providing a comprehensive overview appropriate for all students.

The chemical cycles of ocean and atmosphere and their interaction with Earth's biota. Topics include: the origin of the ocean's salt; the major and biologically active gases in the atmosphere and ocean; nutrients and ocean fertility; the global carbon cycle; the reactive chemistry of the atmosphere. Prerequisites: CHM 201/202 or higher; GEO 202 and/or GEO 361; or permission of the instructor. Three lectures.

This course discusses the processes that control Earth's climate - and as such the habitability of Earth - with a focus on the atmosphere and the global hydrological cycle. The course balances overview lectures (also covering topics that have high media coverage like the 'Ozone hole' and 'Global warming', and the impact of volcanoes on climate) with selected in-depth analyses. The lectures are complemented with homework based on real data, demonstrating basic data analysis techniques employed in climate sciences.