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,...
Curated OER
Cherishing the Water of Life
Learners work in small groups to brainstorm a list of all creatures, plants, natural, and artificial processes that use or depend on fresh water. The class views an aquarium filled with water representing all the water in the world. The...