Fossils in Coldwater Cave
Several beds of crinoids have been found in Coldwater Cave in Winneshiek County.
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Several beds of crinoids have been found in Coldwater Cave in Winneshiek County.
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.
The Boneyard Hollow in Dolliver Memorial State Park includes amazing geologic layers.
White-nose syndrome is a disease in bats that has the potential to alter the ecosystem of the caves.
The physical characteristics of the shovelnose sturgeon, including its scoots, pectoral fins, and downward facing and suctioning mouth, make it suitable as a bottom-feeder in the swift current of Iowa’s waters.
A West Des Moines Public Services staff member explains their anti-ice spray and mixing system.
Acoustic ecology is a field that studies the relationship between sound, living things, and their environment.
In 2018, Iowa enacted a clean water bill making funding available to support clean water measures.
Nuclear plants in Iowa have progressively closed since 2013.
A variety of reflections are seen along the relatively still waters of Chichaqua.
Brood III of the periodical cicadas emerged in Iowa in 2014 after 17 years underground.
At the Missouri River flyway near DeSoto National Wildlife Refuge thousands of geese can be seen migrating.