How do we know that the climate is changing? In this video, provided by scientist Kendrick Taylor, learn how 8-foot long ice core samples extracted from deep in the ice layer of Antarctica hold key evidence of rapidly changing climactic conditions. Its about 20 minutes, but explains the process from ice core extraction, analysis and data collection that make up our current climate models. Best for 11 and 12, but also good for 9 and 10 advanced students. Needs to be modified for ESL and RSP students, due to the amount of chemistry and physics vocabulary.