Research: Endangered mouse never existed

After six years of regulations and restrictions that have cost builders, local governments and landowners on the western fringe of the Great Plains as much as $100 million by some estimates, new research suggests the Preble’s mouse in fact never existed. It instead seems to be genetically identical to one of its cousins, the Bear Lodge meadow jumping mouse, which is considered common enough not to need protection.

—Research: Endangered mouse never existed (CNN/AP)