摘要：This paper focuses on insurance against the small probability of causing really catastrophic climate change may justify significantly curbing CO2 emissions. Such extreme non-linearities maybe exist. However predicting future global climate changes is extremely hazardous, and no-one can rule out the possibility of surprise. This paper uses indirect method to get the possible scenarios that could occur, nor what costs or subjective probabilities to attach to most of the catastrophes that have been suggested.
关键词：welfare cost;carbon dioxide emissions;model without adjustment costs;model with adjustment Cost.
