Sinkholes form when water washes sediment into cracks and voids in the bedrock. These areas can be direct conduits for pollutants to enter groundwater as well as safety hazards. more
In the past few years, Wisconsin has experienced weather extremes. In southern Wisconsin, many communities are struggling with flooding and high lake levels. In the north, lakes are drying up. Learn about the complex interactions between climate change and groundwater and surface water, and what can be done. more
No fragments remain of the meteorite that slammed into what would become western Wisconsin. But there is still a tell-tale scar on the landscape that 475 million years of weathering hasn't fully erased. Find out how geologists pieced together the story of the 4-mile-wide Rock Elm impact structure. more
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