"Globally, these vast herds of Mongolian gazelle that still roam the Mongolian steppe are a unique phenomenon, the sheer size of the herds and their long-distance movements are unique ...

In Mongolia the effects are stark. Among other consequences, deep freezes like the one that killed Zandan's herd -- known as dzuds -- have been growing more frequent and intense. "Last year's winter ...

Great migratory herds of Mongolian gazelle roam here along with 5,000 critically endangered Saiga antelopes and several species of birds. Covering 860,000km2 large amounts of the land on the Steppe is ...