Pricing carbon through a cap-and-trade program or a tax on emissions is thought to be one of the most cost-effective approaches.

The paper focuses on the impact of emission permits and trading on the production policy for emission-dependent firms.

In aspects of often used reduction coefficient of lining external water pressure in tunnel water inflow estimation and hydrotechnical tunnel,this paper analyzes lining external water pressure calculation of rich water segment of tunnel under "limited drainage" via simplified model,and discusses the implementation of "limited drainage" so to conclude some useful conclusions for design reference.

EU glasshouse gas emission trading rights,present situation and enlightenment;

Furthermore,a math model was developed for calculation of hazardous waste emission trading based on modeling and constraints like total pollutant mass control,and distribution decision factors.