Renewable energy from wind and solar rose to 67% last year in Iowa. But tariffs and a rollback on federal tax credits could dampen momentum.

The Iowa Department of Natural Resources hosted a public meeting and hearing Wednesday on a wastewater permit amendment requested by Interstate Power and Light. Several environmental groups argue the draft permit allows Alliant Energy, the parent company, to bypass a federal law passed in 2024.

The Iowa Department of Natural Resources discovered two pallid sturgeon for the first time in the lower Des Moines River earlier this year. The ancient fish is considered one of the rarest and most endangered species in North America.

Iowa cities are receiving significant settlements from chemical companies to address "forever chemical" contamination in drinking water. But officials caution that the funds may not cover all associated costs, as long-term solutions remain uncertain.

U.S. Energy Secretary Chris Wright praised the Ames National Laboratory during a tour, calling it one of the country’s “premier scientific institutions” and a leader in reshoring critical materials. Wright also said he supports less federal funding for wind and solar, and downplayed findings from government reports about climate change.

The tax and spending law signed by President Donald Trump last month significantly shortened the timeline for wind and solar energy tax credits. But an executive order and an onslaught of new federal policies pose a greater threat to the two industries that help electrify Iowa.

From 1959-1989 there were no peregrine falcons found in the wild in Iowa. Now, these raptors are seeing success in their natural habitat and urban environments.

Water restrictions for nearly a fifth of the Iowa’s population brought the state’s nitrate challenges to the forefront. Water quality experts say certain practices higher up in the watershed could make a difference if they are scaled up.

Scientists discussed pollution, bacteria and other challenges plaguing central Iowa's rivers at an event in Des Moines Monday. The presenters contributed to a two-year assessment of the Des Moines and Raccoon rivers, which includes recommendations at the local, regional and state level.

Nitrates, fecal bacteria, sediment and other pollutants in the Des Moines and Raccoon rivers threaten safe drinking water for 20% of the state’s population. That's one of the findings from a sweeping study commissioned by Polk County supervisors.