Humans and Nature

The Mendenhall Glacier near Juneau, Alaska in 1990, image 1. The glacial retreat can be seen in this zone of bare rock where not even lichens or mosses have colonized yet.

The Mendenhall Glacier near Juneau, Alaska in 1990, image 2. The glacial retreat can be seen in this zone of bare rock where not even lichens or mosses have colonized yet.

The Mendenhall Glacier near Juneau, Alaska in 1990, image 3. The glacial retreat can be seen in this zone of bare rock where not even lichens or mosses have colonized yet.

The edge of the Athabaska Glacier in the Canadian Rockies. This photo was taken in 1990, and the sign marks the glacier's edge in 1960.

The edge of the Herbert Glacier in coastal Alaska. Like most glaciers in the world it's shrinking due to global warming, and the rock closest to the glacier is bare, without even lichens or mosses.