According to the highlights of the IPCC Special Report, what differences exist between 0.5 - 1 Celsius increase in warming with respect to economic and drought-related impacts? No difference in economic impacts of drought risk between 1.5C and 2C warming At 1.5C, significant reduction in the probability of drought in regions like Southern Africa and the Mediterranean, and with larger economic damages at 2C warming Increased economic benefits at 1.5C and reduced drought risks at 2C Economic damages and drought risks are lower at 2C compared to 1.5C