Environment pollution is the major problem for all the sectors. In environment pollution there are different types of pollution is included such as air pollution, water pollution, soil pollution etc. In these types of pollution most of it is air pollution. There are many reasons for pollution of air. Human advance in science but one of the major draw backs of science is the pollution of air rapidly. Air pollution is injurious to health. Every year a large number of people died for the effects of air pollution. It can be improved in many ways among these ways technology upgradation plays a major role here. There are various method that prevent air pollution. Many researchers tried and is trying to prevent the air pollution in many ways. In this review paper I summarise the existing research on different ways for preventing air pollution in addition I will discuss the gaps and future aspect on this topic.

Netrokona is a district of the Mymensingh division in northern Bangladesh. In this study, we analyze the soil profile in Netrokona Sadar using digital soil mapping and land formation using the satellite image technique. This study also analyzes the soil profile using remote sensing data of 4 different points in selected area. The main focus of the study is analyzing the soil profile for the structural compatibility and environmental impact for that. After analyzing the soil we found that the soil of that area is mainly clay loam and clayey loam and the soil contains low coarse fragement which is 5.6-8% but we need al least 15-30% coarse fragement in the soil. The soil of this area needs good management to improve its drainage and bearing capacity.