In the case emission of non-uniformly dispersed pollutants such as SO2 the negative effects depend on the location of the sources. A unit increase at one source must be compensated by either a lareg or smaller reduction at another source to keep the negative effects at the same level. Such trade...

This study quantifies CO2 emissions caused by consumption of natural gas, alcohol and petroleum derivatives for six Brazilian regions, and evaluates the impact of possible policies for emission control. The connection between the level of activity and CO2 emissions for each energy input is...

The objectives of the policy on organic farming, the strategies of the policy are explained here.