For the developing countries, most estimates for crop yield impacts are negative, with the share of negative estimates increasing the further into the future the study projects (Figure 5). Idawed by East Asio ond the Pacific, and Sooth Asio. Ho/rever, they ore derived from only two studies. Both point to dramatic long-term impacts, compared to a world without climate change and in the absence of climate change mitigation.3 The impact on yields by the year 2100 under high-emission climate scenarios ranges between -20 and -45 percent for maize, between -5 and -50 percent for wheat, between -20 and -30 percent for rice, and between -30 and -60 percent for soybean (Rosenzweig et al.,