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The speaker discussed what studies have been done on how light pollution affects humans and nature.

Before farmland covered nearly 90-percent of Iowa, the vast majority of the state was prairie. Only a small fraction of that natural habitat remains,

Before farmland covered more than 90 percent of the state, the vast majority of Iowa was prairie. But, the tall green fields dotted with wildflowers that once dominated the state began to vanish as settlers put it under the plow.

Iowa is one of the most biologically altered states in the nation — with nearly all of its natural habitat razed. Some people are looking at how they can resurrect the natural land and the wildlife it has lost.

Western Iowa university students took to restoring one of the nation’s largest urban prairies back to its natural state.