This paper explores the issues in estimating the greenhouse gas (GHG) emissions from the tourism industry and related activity in Australia. The scope of tourism consists of the economic activities defined as "tourism characteristic" and "tourism connected" as defined in the Australian Tourism Satellite Account (TSA). Two approaches are employed and contrasted -a "production approach" and an "expenditure approach". Depending on the approach, tourism contributes between 3.9% and 5.3% of total industry GHG in Australia. The rationale for each approach is explained. The GHG emissions have been estimated for 2003-2004, the latest year for which detailed industry GHG emissions data are available in a form suitable for this type of analysis. Tourism's GHG emissions are compared with other industries in the Australian economy. The policy implications of the results are discussed. It should be possible to adopt a broadly similar method for any destination with TSA -enabling tourism stakeholders to play an informed role in assessing appropriate and effective climate change mitigation strategies for their destination.

The article assesses the potential economic effects on the Australian tourism industry from the introduction of a carbon tax introduced July 1, 2012. The tax is projected to lead to changes in key macroeconomic variables, reducing growth in real GDP, real consumption, and employment. Most tourism industries in Australia will experience a small but significant contraction in output relative to projected baseline values over the period to 2020 in line with a reduction in growth for the economy as a whole. A slightly larger reduction in tourism employment, relative to that of other Australian industries, is projected for the period. The largest falls occur in the Accommodation; Air and water transport; and the Cafes, restaurants and food outlets industries. Since direction of impacts on the tourism industry can be expected to be similar for any pricing scheme to reduce carbon emissions, the analysis has implications for tourism policy globally.

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Global warming has become one of the major environmental issues all over the world. The temperature of the world is increasing day by day, and fortunately, everybody wants to mitigate this fearful condition from own perspective. Carbon dioxide sequestration is a worldwide recognized project for making huge amount of carbon inactive, which is the main component of greenhouse gases, by sequestrating it beneath the Earth. The paper aims to dictate the probable success of CO₂ sequestration in Bangladesh. As abandoned gas fields are the best options for sequestration, characteristics of the potential gas fields of Bangladesh have been analyzed according to Stefan Bachu's method of classification for CO₂ sequestration. Titas gas field shows the best suitability, and accordingly, an Eclipse simulation software basis approach has been taken for this field to determine possible outcomes from probable sequestration project. Simulation result predicts an amount of 2.92 Tcf carbon dioxide gas to be sequestrated after 50 years of simulation. Other criteria such as field pressure, gas saturation are also evaluated.

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