The Tyndall Centre has suggested that a 70% reduction in CO 2 emissions will be required by 2030 to prevent temperature rising by more than 1 ☌. It is necessary to reduce Green House Gases (GHG) emissions by 50% or more in order to stabilise global concentrations by 2100. Global temperatures are set to rise by a further 1.1 ☌ in a low emissions scenario, and by 2.4 ☌ in a high emissions scenario, by the end of the century.
This is generally accepted to be the reason that average global temperatures have increased by 0.74 ☌ in the last 100 years. The emission of these gases is the result of intensive environmentally harmful human activities such as the burning of fossil fuels, deforestation and land use changes. Global warming is the consequence of long term build up of greenhouse gases (CO 2, CH 4, N 2O, etc.) in the higher layer of atmosphere. Concerns about the local and global environment situation are rising all over the world. Of the many environmental impacts of development, the one with the highest profile currently is global warming, which demands changes from government, industry and public.
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