The United Nations warned Monday that the world’s deserts are facing dramatic threats because of global warming.

• Kaveh Zahedi, deputy director of the United Nations Environment Program: “The report shows that climate change is having a serious effect on deserts. We see that temperatures are climbing, we see that rainfall is decreasing in many of the deserts and is due to decrease even further. We see that the glaciers that support the ecosystems within the desert are melting and of course all of these–and the change in the temperatures, the change in the rainfall patterns