Drill wells in search of natural gas. Drill through the aquifer (represented by the blue layer) until you find the shale layer (a pale brown layer). Can you be sure you located a large amount of trapped methane? Were you able to drill without contaminating the aquifer? If not, where did the contaminants come from?
This interactive is part of the High-Adventure Science "What are our energy choices?" lesson. To use it and other lessons with your students, create a High-Adventure Science account.