Topic(s): Measurements and Observations, Climate Data, Extreme Weather, Plants and Animals, Melting Ice and Permafrost, Climate Impacts
Grade Level: Middle (6-8), High School (9-12), College Lower (13-14)
This video is part two of a seven-part National Academies series, Climate Change: Lines of Evidence. The video outlines, with the use of recent research and historical data, how we know that the Earth is warming.