The Loess Hills of western Iowa are a unique landform, the formation of which has resulted in characteristic "steps" in the hills.

Distinct differences road surfaces across Iowa are connected to geologic processes over time and location.

Macroinvertebrates can help limnologists assess water quality when looking at the biodiversity of a stream

Data show the changes in dissolved oxygen levels from various test locations over the summer months.

Reed canary grass grows natively in Europe and Asia, but in taking over in some Iowa locations.

Eden Valley Refuge features the exposed limestone outcrops. Limestone is a sedimentary rock and is formed by an accumulation of skeletal fragments of marine organisms.

Rusty patched bumble bees were listed as endangered in 2017. This is just one species of bumble bee that has been on the decline.

Areas along the shores of the Mississippi River experiencing complete loss of trees which causes a decline in ecosystem biodiversity.

Avian influenza is a virus that affects bird populations, both domestic and wild. Like all viruses, avian influenza changes over time due to mutations that affect proteins.

Using goats to control invasive trees, shrubs and other plants unique solution for maintaining remnant prairie.

The time-lapse video captures two monarch caterpillars feeding on a milkweed leaf, showcasing a key part of their life cycle and illustrates the caterpillars' role in the ecosystem as they consume plant matter.

After an apple is split open and exposed to oxygen, the flesh slowly turns brown as the oxygen starts to combine with the elements and compounds in the apple.