Scientists have a particularly difficult time explaining warming trends in Antarctica—a region with a relatively short history of scientific observation and a highly variable climate (Clarke et al. 2007). Regardless of the mechanism of warming, however, climate change is having a dramatic impact on Antarctic ecosystems. In this article, the authors describe a standards-based, directed inquiry they have used in tenth grade biology classes to highlight the ecosystem level changes observed on the western Antarctic Peninsula. This activity stresses the importance of evidence in scientific explanations and demonstrates the cooperative nature of science.