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A woodchip bioreactor is used for nitrate removal from agricultural runoff.

In 2019, midwest governors asked the U.S. Corps of Engineers to change flood management priorities.

Tadpoles are a part of the frog lifecycle.

The mussel is a keystone species in the Mississippi River, providing critical benefits to the river ecosystem. 

The Raccoon River and Des Moines River join together in Des Moines.

This 360 view of Big Sand Mound Nature Preserve offers a look into this unique Iowa habitat.

Almost 20 years after the Iowa DNR began efforts to reintroduce the trumpeter swan back to Iowa, the program is succeeding.

Many of the trees surrounding the oxbows at Chichaqua Bottoms Greenbelt seem to be curving up and away from the water, while the tree trunks on land tend to be more straight.

A time lapse of four freshwater mussels in a 2.5-gallon tank of cloudy river water for a one-hour period shows cloudy water changing to almost completely clear water.

This program in Eastern Iowa supports extending solar power use in the area.

Several beds of crinoids have been found in Coldwater Cave in Winneshiek County.

Nine different owl species call Iowa home and are found in different regions of the state, each with a unique look and habitat.

A pony truss bridge is different from other truss bridges because it allows traffic to go through it, but is not connected by braces over the top.

Farmers Electric Cooperative is using solar panels to help capture solar energy and distribute it to the members of the cooperative. 

Many types of plants grow in the water of the oxbows in Chichaqua Bottoms Greenbelt.

Common sounds may be different in an environment when there is snow cover as compared to when there is not.

The deep roots of prairie plants take the carbon out of the air and add nutrients to the soil when they die.