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5.12 Carbon footprint
A carbon footprint is "the total set of greenhouse gases (GHG) emissions caused by an organization, event or product".
For simplicity of reporting, it is often expressed in terms of the amount of carbon dioxide , or its equivalent of other GHGs, emitted.

The concept name of the carbon footprint originates from ecological footprint discussion.
The carbon footprint is a subset of the ecological footprint and of the more comprehensive Life Cycle Assessment (LCA).

Wikipedia

  1. Carbon Footprint
    Carbon Footprint is a measure of the impact human activities have on the environment in terms of the amount of green house gases produced, measured in units of carbon dioxide.

    It is also defined as a measure of the amount of carbon dioxide emissions that can be attributed to an organization, product or individual.

    Going beyond the burning of fossil fuels in daily operations (e.g., from heating or travel), all indirect sources of carbon dioxide emissions are accounted for, including those generated in the production of the consumer goods we purchase.

    With the alarming repercussions of climate changes, caused by the emission of greenhouse gases, low carbon economy is one of the most adopted policies in different parts of the world.

    Countries with the highest energy footprint per person in 2001 were Kuwait, United Arab Emirates, followed by USA, Australia.

    Carbon footprint quantification, analysis and reduction are keys to understanding the threat of carbon emissions in a country and working to alleviate the impacts of climate change.

    Climate change reduction may be accomplished through enhancing energy efficiency and mitigating carbon emissions by means of green energy technology, and then compensating for remaining GHG emissions by investing in carbon offsets, with the ultimate goal of becoming carbon neutral.
  1. The World at Crossroad, Hydrogen Economy and Low Carbon Economy
    It is now widely accepted that the increased combustion of fossil fuels since the industrialization of the Western world has led to unprecedented changes in the chemical composition of Earth's atmosphere, with multiple consequences for regional air quality and the global climate system.

    Efforts to curb CO2 emission have triggered a number of alternatives that scientists and policy makers are considering. Hydrogen based economy is one of the solutions emerging as a clean and safe alternative to fossil fuel, the major emitter of CO2

    Through its reaction with oxygen, hydrogen releases energy in fuel cells to produce water as its only by-product.

    Hydrogen is abundant and is well distributed throughout the world with no regard to national boundaries.
    It only needs some technical know how to produce energy with no politics interference.
    However, there are some key barriers to the development of a "hydrogen economy."
    Most importantly, the current cost of both fuel cells and hydrogen fuel makes them uncompetitive for most applications. However, the gap between the present state of the art, in hydrogen production, and that needed for a cost effective hydrogen economy is too wide to bridge in incremental advances.
    It will take fundamental breakthroughs of the kind that come only from basic research.
  1. Low Carbon Economy
    The transition to a low carbon economy is emerging as one of the potential remedies to climate change impacts.

    Low carbon economy is a toolbox that includes a set of policies and measures meant to cut down the use of high carbon fossil fuel. It promotes using mixtures of energy efficiency, renewable sources of electricity, replacing coal and oil with lower carbon fuels such as gas and the use of hydrogen as a fuel.

    Low carbon economy should have a negligible impact on long term GDP growth and will present tremendous opportunities for those who develop and deliver low carbon products and services.

    Given international engagement on climate change mitigation, the benefits of moving to a low carbon economy will more than offset the impact on the limited number of disadvantaged industrial sectors.
    Furthermore, security of supply will be increased by the lower energy demand and greater diversity of energy sources in a low carbon economy.
  1. Carbon Neutrality
    Carbon neutral is a venue to share responsibility towards our impact to climate change. It works out by subtracting emission we produce by purchasing carbon offsets.
    Carbon offsets are credits for emission reductions accomplished by projects, such as wind farms, solar installations, or energy efficiency projects. By purchasing these credits, it would be possible to reduce net climate impact.
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The Greenhouse effect, Climate Change and the road to sustainability
1. 1 Greenhouse effect
2. 2 Science
3. 3 Mitigation
4. 4 Impacts
5. 5 Solutions?