In this resource, images of glaciers from the late 1800s and early 1900s are compared to present day conditions. This is part of a project by the U.S. Geological Survey called Repeat Photography, where “photographers using photos of glaciers from the late 1800s and early 1900s rephotograph those same scenes to show how things have changed (and are changing). “ (PetaPixel.com)
The teacher could pose the following driving questions:
What changes do you see in the pictures?
If you were to visit these parks 10 years from now, what would you expect to see?