Climate Change Resources
U.S. Global Change Research Program
Pew Center on Global Climate Change
National Park Service
National Science Foundation
U.S. Fish and Wildlife Service
U.S. Geological Survey
Did You Know?
Mineral stains give color to the famous cliffs of Pictured Rocks National Lakeshore. Red and orange colors are iron, black is manganese, white is limonite, and green is a trace of copper. There are no pictographs or petroglyphs on the Pictured Rocks cliffs (that we know of). More...