Map showing drought conditions in the western United States in 2020

Does Less Pollution Mean Less Precipitation?

IIHR researchers Wei Zhang and Gabriele Villarini (IIHR director) have published research linking urban sprawl to an increase in rainfall and flooding during Hurricane Harvey.
A view of the Ottumwa treatment basins.
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Safe Drinking Water for Iowans

Scientists at IIHR are working with municipal water supply operators in several Iowa cities to help bring safe and reliable supplies of drinking water to those communities.
An illustration of a pentecopterus.
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Researchers Find Giant Fossilized Sea Scorpion

IGS researchers have uncovered fossils of Pentecopterus, an ancient six-foot scorpion-like sea creature named after an ancient Greek warship. (Illustration by Patrick Lynch/Yale University)