cost of Iraq war

How Much Will It Cost to Address Climate Change? Pennies Compared to the Alternative

Economic growth and global warming, Figure 1 from a paper studying "Global non­linear effect of temperature on economic production" (link below). "Non-linear" in this case means "at what warming point do economies tend to 'fall off a cliff'"? It's not the same point for all economies, but the non-linearity is obvious. (For conversion in charts a, b, and c, 20°C = 68°F, and 30°C = 86°F.