This story was originally published by the Guardian and is reproduced here as part of the Climate Desk collaboration. Investigators in Colorado have been left baffled after dozens of cattle inexplicably dropped dead in a remote corner of the state. The mystery has triggered a wave of US press coverage, with the New York Post running a headline claiming: “Cattle slaughtered by mystery creature that left no tracks.” About 40 cows and calves have been found dead near the town of Meeker, in northwest Colorado, in the past two months.