The United Nations’ top scientific panel on climate change has concluded global warming will threaten the world’s food supply in the coming decades. A leaked draft of the Intergovernmental Panel on Climate Change’s next report warns climate change could reduce crop production by 2 percent each decade for the rest of the century, driving up prices and plunging millions more into hunger and starvation. It is the first time the IPCC has issued a dire warning on global warming’s threat to the world’s food supply. The report also warns global warming could “exacerbate” a number of other problems, including poverty, water scarcity and war. The panel’s report is formally due in March. According to NASA, new data shows this past September tied 2005 for the warmest September on record.