In rivers and lakes across the nation, scientists are finding male fish displaying female characteristics. What's going on?

We explored this question with Mark Fritts, former researcher at the Illinois Natural History Survey, and Rebecca Klaper, professor in the School of Freshwater Sciences at the University of Wisconsin.

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Monarch butterflies are in the middle of their migration from Mexico back up to Canada, and they are already being spotted in the southern part of the state.

We talked about the National Wildlife Federation’s Mayors' Monarch Pledge with the executive director of the federation’s Illinois office, Carol Hays.