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Updated at 5:50 p.m. to add comments from Senator Roy Blunt. The U.S. Senate has rejected a bill that would have done away with new federal limits on mercury and other toxic air pollutants from power plants. The resolution introduced by Republican Senator James Inhofe would have eliminated the Mercury and Air Toxics Standards finalized by the Environmental Protection Agency in December. Missouri’s senators were divided on the issue.

An endangered beetle will be making its Missouri comeback on Tuesday. That's when about 250 American burying beetles will be reintroduced in the Wah’Kon-Tah prairie, about 60 miles northwest of Springfield. It's a joint effort of the Nature Conservancy, the U.S. Fish and Wildlife Service, the Missouri Department of Conservation, and the St. Louis Zoo.

The minority business advocacy group MOKAN says the Metropolitan St. Louis Sewer District is not doing enough to include local minority and female workers in its sewer upgrade projects. MOKAN executive director Yaphett El-Amin says her group wants MSD to increase the transparency of its hiring practices and invest at least $23.5 million in worker training programs.