According to a new study of rivers and lakes in Wisconsin, natural foams from these bodies of water contain much higher concentrations of per- and polyfluoroalkyl substances (PFAS) than the water below them.

127 years ago, University of Wisconsin biology professor Edward Birge purchased glass models of sea creatures ranging from jellyfish to sea cucumbers from famous German glassblowers Leopold and Rudolph Blaschka, for use in teaching biology.
It’s also why, this year, Laura Monahan arranged for UW–Madison to hire expert glassblower Tim Drier to create similar deep-sea invertebrate models, as the old ones were too delicate and artistically valuable to handle.

Dugan’s scientific journey began in the Arctic, where the rapid transition from winter to summer happens in June. “Nowhere is changing as fast as the Arctic when it comes to losing ice,” she says. In many places in this warming world, winter is the fastest warming season. Wisconsin has lost snowpack and almost a month of lake ice in the last century. Dugan wondered: what happens to ecosystems as they lose ice? “Maybe it’s not important, but we don’t actually know,” she says. “I’m generally fascinated by how humans are changing lakes,” says Dugan.

Walleye, a prized catch for freshwater sportfishing enthusiasts and a staple in Midwestern cuisine, also play a vital role in the cultural traditions of many Indigenous communities. However, according to a new study led by the University of Wisconsin-Madison, walleye populations are now facing challenges due to the increasing temperatures in the waters of the Midwest United States and Canada.

Lake Mendota and Lake Monona form a central part of Madison’s identity. They enhance the surrounding area’s appeal and draw people to the beauty, recreation and vibrancy they create, according to Between Two Lakes. But underneath their glistening surfaces, the lakes tell a murkier story.

Amid threats from humans, climate change, Manoomin Education and Outreach Project aims to educate on plant’s ecological, cultural significance

Freshwater ecosystems account for half of global emissions of methane, a potent greenhouse gas that contributes to global warming. Rivers and streams, especially, are thought to emit a substantial amount of that methane, but the rates and patterns of these emissions at global scales remain largely undocumented.

Freshwater ecosystems account for half of global emissions of methane, a potent greenhouse gas that contributes to global warming. Rivers and streams, especially, are thought to emit a substantial amount of that methane, but the rates and patterns of these emissions at global scales remain largely undocumented.