Great Lakes Now tries to make every episode interesting and educational. In “Finders, Keepers,” join researchers as they uncover details about the bottom of the Great Lakes, head to Toronto’s Royal Ontario Museum to learn how scientists are using a natural history collection to understand changes to global biodiversity, and tune into The Catch for more news about the lakes you love. Read Now at Great Lakes Now.

This lesson will explore the phenomenon of sound waves underwater used to map landforms and how modern technology is helping update the maps of the terrain beneath the Great Lakes. Students will learn about the history of mapping the lakebed and the SONAR technology used by NOAA to upgrade our maps. Read Now at Great Lakes Now.

By Keith Schneider, Circle of Blue The Great Lakes News Collaborative includes Bridge Michigan; Circle of Blue; Great Lakes Now at Detroit Public Television; and Michigan Radio, Michigan’s NPR News Leader; who work together to bring audiences news and information about the impact of climate change, pollution, and aging infrastructure on the Great Lakes and drinking water. Read Now at Great Lakes Now.

This lesson will explore the phenomenon of biodiversity in the Great Lakes and the efforts one museum in Ontario, Canada has taken to catalog it. Students will learn about the history of fish indexing in the Great Lakes, the type collection at the Royal Ontario Museum, and discover why this kind of organism library is helpful to preserving the Great Lakes ecosystem. Read Now at Great Lakes Now.