Global warming kills livestock in Mongolia....

Warm winters are just bad...

Aid groups have described piles of dead animals and warned of Mongolian herdsmen fleeing to cities as the United Nations says a harsh winter has killed 1.7 million livestock vital to the largely rural country.

The U.N. Food and Agriculture Organization said in a statement Tuesday that up to 4 million livestock could be dead by spring if conditions that include temperatures as low as minus 50 Celsius (minus 58 Fahrenheit) continue.

It said the bitter cold and heavy snow have put 21,000 herder families at risk of "food insecurity" and said those families have lost more than 50 percent of their herds.

A World Bank statement said that in the worst-affected areas animal "carcasses lay strewn around." It said more than one-third of people in Mongolia herd livestock for a living.