OMAHA, Neb. (AP) — A new report says the U.S. has seen an increase in the number of a certain kind of derailment related to the forces created when railcars push and pull against each other as freight trains have gotten longer. The National Academies of Sciences on Tuesday released a long-awaited report. It says that regulators, Congress and the industry should reexamine the risks associated with long trains and make sure they are addressed. The report said railroads must take special care in the way they assemble long trains. That’s especially the case with trains that have a mix of different types of cars.… Continue Reading