Why Did U. of Minnesota Call Off a Documentary Premiere?

The University of Minnesota-Twin Cities is getting a lot of questions about why it called off the scheduled broadcast premiere of a documentary, "Troubled Waters," which is about the Mississippi River and produced by the university's natural history museum, The Star Tribune reported. University officials say that they delayed the broadcast -- which was to have taken place on the Twin Cities public television station next month -- so that faculty members could review the documentary for possible issues of accuracy and balance. But those involved in the documentary say that it was fact-checked thoroughly. Parts of the documentary focus on environmental problems created by chemicals used by farms -- and that material is expected to be controversial.