A major insurance corporation in Munich of Germany casts alarm to the whole world. They say that climate fluctuation costs the mankind US $300 billion every year. The company has been studying the loss caused by natural disasters since 1960s. In one of their reports, they said that we must control the emission of CO2, for it directly causes green house effect.

Their data comes from 86 insurance companies in 27 countries. The statistics show that the annual economic loss caused by tropical typhoon, sea level rising, fishery loss, agriculture problems, and water resource problems amount to US $304.2 billion.