National Wildlife Federation
Quantifying Land Changes Over Time Using Landsat
"Humans have become a geologic agent comparable to erosion and [volcanic] eruptions ..." Paul J. Crutzen, a Nobel Prize-winning atmospheric chemist. Using Landsat imagery, scholars create a grid showing land use type, such as urban,...
Science Matters
Up and Down Fault Blocks
The Sierra Mountains in Nevada and the Tetons in Wyoming originally formed as fault block mountains. In order to visualize these fault blocks, pupils use construction paper to create layers of earth. They cut the paper models and form...