Water

Iowa's farmland sits on more than soil — deep underground may be the makings of a clean energy economy. On this episode, we go beneath Iowa's surface to talk about a billion-year-old rock formation where geologic hydrogen is hiding. We talk with Ryan Clark, associate state geologist at the Iowa Geological Survey and Betsy Swanner, an Iowa State University professor of Earth, atmosphere and climate to find out what it would take to actually build a hydrogen economy in Iowa. Then, Iowa State University agronomist Jianming Yu shares what artificial intelligence and citizen science reveal about how plants adapt to their environments.

The issue of data centers is heating up in a small community just south of Sioux City. Residents say they were left in the dark, and Woodbury County officials are considering new regulations.

Data centers are massive and thirsty for water and power. Iowans are split on whether they're good neighbors. On this episode, the data center debate as cities and counties throughout the state are weighing potential data center installations. First, a Brookings Institution researcher on what rural communities stand to gain and lose from these developments. Then, Linn County Supervisor Sami Scheetz joins to discuss the ordinance they passed earlier this year and how it compares to other local governments' approaches to recent data center proposals. Iowa’s state geologist discusses whether Iowa's groundwater supply can handle the demand from data centers. And a public health researcher joins to discuss the public health implications from data centers powered by nonrenewable sources.

At the first reading of a proposed data zoning ordinance, residents of Palo and nearby communities raised concerns over the negative impacts future data centers could have on water and traffic, as well as light and noise pollution. Many people asked for the city to tighten regulations, while several others asked the city to table the ordinance completely.

Central Iowa Water Works leaders said data indicates central Iowans may face another lawn watering ban due to high nitrate levels unless residents limit water use.

With data centers on the rise and an increased need for irrigation for farming, Iowa is seeing a bigger need for ground water, with not enough known about our supply.State Geologist Keith Schilling shares how the state's current groundwater monitoring paces far behind neighboring states, and what we should be doing now to reverse the trend. Linn County Sustainability Director Cara Matteson also joins to talk about how the county is prioritizing groundwater mapping and other water studies. Then, we look back at Christopher Merrill's 25 years as director of the International Writing Program at the University of Iowa.