This resource clearly shows students where most methane emissions come from and how they have changed over time.
Students can click on the graph to view the data for a specific year.
Additional Prerequisites
Students should know how to read a line graph and be familiar with the term fugitive emissions.
Note that the methane emissions are calculated on a 100-year CO2equivalency scale, so the 20-year values would be significantly higher due to methane's short (10-12 years) residence time in the atmosphere.
Differentiation
Cross-curricular connections could be made with social studies and chemistry classes.