Iowa land is abundant with both native and nonnative plant species and pollinators often interact with both.

Since its completion in 1969, the Red Rock Reservoir has been filling with mud, and has lost a large portion of its storage capacity.

Most types of E. coli are harmless or cause minor symptoms, but a few strains can cause more serious problems. Monitoring can help reduce these risks.

The amount of filamentous and periphytic algae (growing on plants) over a four-week period was visibly reduced after an early summer bloom.

The look of water can be deceiving, and the clearest waters can also be the most unsafe to drink or live in.

This Iowa-grown Granny Smith apple shows a few blemishes.

When the seasons change, animals have ways to adapt to the different temperatures and weather.

Water towers can be found in almost every town and city in Iowa, but their purpose involves much more than simply storing water.

Clouds are made up of trillions of water droplets and are an essential component of the water cycle.

When the weather turns cold, fewer bugs are seen.

Both beavers and humans build dams to meet their needs.

In the fall every year in Iowa there is a pattern of the leaves turning colors and ultimately falling off of trees.

The changing location of the sun in the Earth's sky will affect the appearance of shadows.

Algae is a green substance that lives on the surface of Iowa lakes and ponds. While some types of algae are normal, most algae on the top of water is harmful to all living life.

Lakes tend to freeze from the top down.

Certain plants grow during specific times of the year and others do not.

A privately owned flower garden contains black-eyed Susan flowers, which the owner never planted.

When the weather turns cold, the grass observably changes and turns brown. When leaves lose their color they shrivel up and decompose.