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Iowa City
Increasing deer populations are causing issues in some areas.
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Manchester
Data from fish raceways show changes in oxygen levels as the water passes through raceways.
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Pleasant Hill
Rainscaping is a way to reduce the impact of stormwater runoff, especially in concrete laden cities.
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Solon
A cacophony of frogs and toads call out as they emerge from the mud in early spring and start looking for mates.
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Pleasantville
Small rocks have been rounded as they were carried downstream.
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Eddyville
The location of rock quarries may offer insight to their relation to humans and the environment.
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Adair
Algae's involvement in the nitrogen and carbon cycle can cause fish kills, but it could potentially be a solution in preventing it.
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Council Bluffs
Engineers use expansion joints to allow bridges to expand and contract in response to temperature fluctuations.
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Fayette County
The state has a variety of surface water and underground water resources.
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Council Bluffs
Urban rain gardens can help reduce the amount of storm water going through the system and allow more water to infiltrate through the ground.
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Farley
Icicles on a roof appear to be sideways, rather than perpendicular to the ground.
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Manchester
Startled fish cause a wave surge as their individual movements constructively interfere.
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Pleasantville
This litter of pigs all have the same parents, but look different from their parents and each other.
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Davenport
Chloride levels were tested and monitored in several local waterways after the first snow melt to determine street salt impact on local waterways.
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Northeast
Radio frequency identification tags are used to track cattle and allow computers to gather real time data on a cow's movement, health and production.
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Southeast
Animal scat can be examined to determine evolutionary relationships in the animals.
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Council Bluffs
Stockbridge dampers are placed on power lines and light poles to prevent oscillation through resonance.
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Winterset
The Iowa Wind and Rock is a physically demanding bicycle race in Iowa.
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Iowa City
The sights and sounds of a spring thunderstorm in Iowa, caused by extremes in weather fronts.
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Pella
Stomata in tulips are important parts of the photosynthesis and cellular respiration processes.
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Farley
Opening a compost pile on a chilly morning allows steam to escape and a thermometer stuck into a compost pile near the surface and deep into the pile, shows radically different temperatures on a spring day.
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Eddyville
This series of pictures shows the traits and presence of the prickly pear cactus in different seasons.
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Iowa City
Barred owls are large brown owls and their calls are often heard at dusk and through the night due to their nocturnal behavior.
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Marion County
The Cordova Tower is the tallest observation tower in a public park in the Midwest.
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Dike
Igneous rocks in the form of granite rocks are all over Iowa, however there are no active volcanoes or active plates.
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Pella
Pella Tulip Time is planned in advance to make sure that tulips are properly prepared and planted, but tulips bloom at different times.
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Orient
The water depth and quality of this small farm pond have changed because of soil disposition.
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Cedar Falls
Green roofs are planted in an effort to reduce a variety of environmental impacts.
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Dike
Every spring in Iowa many farmers either have to pick up rocks from their fields or pay for it to be done.
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Fayette County
Many people believe Iowa's landscape is nothing more than flat plains. However, the landscape in northeast Iowa is very different than the rest of the state.
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Muscatine
A completed livestock shade barn is a structure with only three walls.
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Des Moines
A series of graphs illustrate how the amount of daylight changes at different times of the year.
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