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Sioux County
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.
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Ackley
Using goats to control invasive trees, shrubs and other plants is a unique solution for maintaining remnant prairie.
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Spirit Lake
This time-lapse video captures two monarch caterpillars feeding on a milkweed leaf, and illustrates the caterpillars' role in the ecosystem as they consume plant matter.
Multimedia
Waterloo
After an apple is split open and exposed to oxygen, the flesh slowly turns brown.
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Davenport
Weather forecasting helps people prepare their homes and businesses, and remain safe during natural disasters.
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Stacyville
Milk is collected from cows and, after a while, the milk forms two different layers. They look somewhat similar but, when poured out, the layer on top is thicker than the layer below.
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Waverly
Dry run creeks are a strategically placed design solution for flood mitigation.
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Decorah
Fog is visible at the bottom of a hill on a summer evening.
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Tipton
The Eastern Iowa tornado of March 2023 demolished a century farm. The rebuilding process included balancing several constraints.
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Sumner
Retention ponds are artificial structures designed to retain and treat contaminated stormwater runoff.
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Maquoketa
Exotic bush honeysuckles are invasive, perennial deciduous shrubs which prefer sunny sites such as forest edges, pastures, roadsides, and open woodlands.
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Ames
"Al dente" means "to the tooth" in Italian and refers to the ideal consistency of pasta when cooked. Besides a more appealing taste, cooking pasta "al dente" provides inherent nutritional value.
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Council Bluffs
Urban runoff is the trash run off that occurs after each major rain or wind storm, and in Iowa results in millions of pounds of trash being washed into Iowa waterways.
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Sumner
A straight stick placed in water can appear to be bent at an angle.
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Adel
When working with natural gas, a spark can mean danger. Selecting tools made from the right materials can reduce that danger.
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Prairie City
The musk thistle is an invasive species must be controlled to prevent its spread.
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Carroll
Foxglove has a tightly connected ecological relationship with bumblebees.
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Oxford
The Johnson County Conservation Board and Iowa DNR dredged the lake in F.W. Kent Park and created interconnecting catch basins to reset its water quality, using testing to monitor the progress.

Funding for Iowa Science Phenomena Provided By

Aliant Energy
Corporation for Public Broadcasting
Musco Lighting
Pella
Reserve Endowment and Protection (REAP)