http://www.mongoliaonline.com/Environment/mongolias-big-freeze/ March 14, 2010 A slow natural disaster is taking its toll on Mongolia's herders, killing thousands of livestock and putting livelihoods at risk.The phenomenon is known as the Dzud - a severe summer drought followed by an extra harsh winter.With heavy snows covering up already sparse grazing land, millions of animals have perished.Al Jazeera's... Sun, 14 Mar 2010 17:54:04 EDT en