Evidence from the natural sciences for past and present climate change is overwhelming. However, its deployment as an explanatory framework in archaeology is inconsistent — on the one hand, climate change must have had profound impacts on many past human societies; but on the other, archaeologists are justifiably wary of automatically pinning changes in past lifeways on external environmental forces, rather than seeking "internal" political, social, and ideological explanations. Currently, archaeological investigations of climate change impacts are experiencing a surge of interest, at least in part because of the prominence of modern climate change in public political, social, and economic discourse. As a global community, we are worried about it! Many major past phenomena, from hunter-gatherer migrations through agricultural origins to the rise and demise of state-level societies have been hypothesized to result, often quite directly, from changing climates (though of course other explanations also exist). At the same time, climate change archaeology is becoming increasingly sophisticated, particularly in terms of understanding the mechanisms through which aspects of climate/weather and human lifeways are entangled. To begin to come to grips with these issues, this survey course will cover: 1) general approaches to studying climate change in relation to past human lifeways; 2) case studies in which climate change is hypothesized to have had direct impacts on past societies; 3) the impacts of modern climate change on the archaeological record; and 4) the relationship of archaeology as a discipline to broader considerations of current and future climate change.