Endangered Antelopes Face 'Catastrophic' Die-Off

A critically endangered species of antelope is dying by the thousands from a deadly infectious disease outbreak in Mongolia, and scientists fear there could be "catastrophic consequences" for the threatened animals and their ecosystem.Since December 2016, about 2,500 Mongolian saiga (Saiga tatarica mongolica) — a unique subspecies of saiga antelope — have died from a livestock virus.Scientists estimate the Mongolian saiga population to be about 10,000, meaning the deadly outbreak has