Climate Cast

The transportation sector is a large contributor to climate change, accounting for about 28 percent of total U.S. greenhouse gas emissions. Within that sector, aviation accounts for around 2 percent of carbon dioxide global emissions, according to the U.S. Department of Energy.

Looking to reduce its carbon footprint, the aviation industry is seeking fuels from more renewable biological sources. At the University of Minnesota’s Forever Green Initiative, researchers are working to commercialize winter oilseed cover crops that can keep soil healthy and also be turned into aviation fuel.

MPR News chief meteorologist Paul Huttner spoke with Mitch Hunter, co-director of the Forever Green Initiative and an adjunct assistant professor at the University of Minnesota.

Click play on the audio player above to listen to this episode or subscribe to the Climate Cast podcast.

Fossil fuels are by far the largest contributor to global climate change, accounting for nearly 90 percent of all carbon dioxide emissions. But there are people here in Minnesota working on solutions for managing those emissions.

MPR News chief meteorologist Paul Huttner spoke with Paul Dauenhauer, a Distinguished McKnight University Professor at the UM College of Science and Engineering, about the start-up company Carba, of which he is a cofounder.

Through Carba, they have developed a proprietary process that converts plant-based waste material into biochar, a stable material that sequesters carbon and can be buried underground for more than 1,000 years

The United States is among the world’s largest beef producers, producing some 12 million tons in 2025. But cattle generate a lot of emissions. The beef industry alone is responsible for around 3 percent of total greenhouse gas emissions in the United States.

MPR News chief meteorologist Paul Huttner spoke with Jennifer Schmitt, senior research scientist in sustainability at the University of Minnesota’s Institute on the Environment, about what’s currently being done to reduce emissions.

Plus, a snippet from a recent episode of This Old House Radio Hour about climate preparation is reshaping the housing of America.

Click play on the audio player above to listen to this episode or subscribe to the Climate Cast podcast.

Minnesota Arctic explorer Will Steger has trekked across thousands of miles of ice in both the north and South Poles, crossing the Larsen Ice Shelves a few years before they disintegrated and collapsed into the sea.

MPR News chief meteorologist Paul Huttner spoke with Steger about dramatic changes he’s seen in Arctic regions over the past several decades.

The last time Lake Superior completely froze over was 30 years ago in 1996. Around that time, Lake Superior was consistently at least 75 percent frozen over. Now, 75 percent coverage is rare, only happening about once every four years.

Ice on the Great Lakes, and Lake Superior specifically, is a great way to measure climate for our region. MPR News chief meteorologist Paul Huttner spoke with UMD professor Jay Austin, about what ice coverage can tell us about climate change.

Click play on the audio player above to listen to this episode or subscribe to the Climate Cast podcast.