GILLETTE, Wyo. (AP) — A Wyoming lawmaker is trying again to impose tolls to widen the state's busiest highway.

CASPER, Wyo. (AP) — The Wyoming Department of Environmental Quality has issued more ozone air pollution warnings than usual this year in the southwest part of the state.

CHEYENNE, Wyo. (AP) — Wyoming Legislature interim committees will study a broad range of topics this year, covering everything from revenue-broadening tax measures to how to care for an aging population.

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