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  1. #1
    Thailand Expat
    crippen's Avatar
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    We are all doomed! Again/

    Laughing gas is biggest threat to ozone
    It's no joke - laughing gas is now the biggest threat to the Earth's ozone layer, scientists have said.

    Published: 7:00PM BST 27 Aug 2009
    Nitrous oxide, better known as the dental anaesthetic "laughing gas", has replaced CFCs as the most potent destroyer of ozone in the upper atmosphere, a study has shown.
    Unlike CFCs (chlorofluorocarbons), once extensively used in refrigerators, emissions of the gas are not limited by any international agreement.

    "The dramatic reduction in CFCs over the last 20 years is an environmental success story," said Dr Akkihebbal Ravishankara, who led the US research. "But man-made nitrous oxide is now the elephant in the room among ozone-depleting substances."
    The ozone layer shields plants, animals and people from the harmful effects of ultraviolet radiation from the Sun.
    Thinning of the ozone layer can result in damage to crops and aquatic life, and expose humans to a greater risk of skin cancer.
    Under the 1987 Montreal Protocol action was taken to phase out ozone-destroying man-made chemicals such as CFCs.
    But the treaty did not cover nitrous oxide, which is generated by fertilisers in the soil, livestock manure, sewage treatment, combustion and industry.
    Human activities account for about one third of global nitrous oxide emissions. The gas is also produced naturally when bacteria in the soil and oceans break down nitrogen-containing compounds.
    Dr Ravishankara's team from the US National Oceanic and Atmospheric Administration (NOAA) calculated the "ozone depletion potential" (ODP) of nitrous oxide and found that it was similar to many CFCs.
    Writing in the journal Science, the researchers warned that if nothing was done the gas would remain the biggest ozone-depleter throughout the rest of this century.
    Curbing nitrous oxide emissions would enhance the ozone layer's recovery.
    Since nitrous oxide was also a greenhouse gas, this would represent a "win-win" for both the ozone layer and the Earth's climate, said the scientists. view-source:Laughing gas is biggest threat to ozone - Telegraph

  2. #2
    Party Animal!
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    From Wikipedia:
    Although catalytic converters are effective at removing hydrocarbons and other harmful emissions, most of exhaust gas leaving the engine through a catalytic converter is carbon dioxide (CO2),[11] one of the greenhouse gases indicated by the Intergovernmental Panel on Climate Change (IPCC) to be a "most likely" cause of global warming.[12] Additionally, the U.S. Environmental Protection Agency (EPA) has stated catalytic converters are a significant and growing cause of global warming, due to their release of nitrous oxide (N2O), a greenhouse gas over 300 times more potent than carbon dioxide.

  3. #3
    Thailand Expat Texpat's Avatar
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    I'm weary of being doomed all the time.

    Can't we find something that will make our lives better?

    When was the last good-news story you heard?

  4. #4
    Member bretby's Avatar
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    Quote Originally Posted by Texpat View Post
    I'm weary of being doomed all the time.

    Can't we find something that will make our lives better?

    When was the last good-news story you heard?
    Could well be a load of hot air. Surely if true there would be more folks laughing.

  5. #5
    Member biggrtiggr's Avatar
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    Laughing gas is becoming popular at music festivals etc in the uk now. Kids are buying whipped cream dispensers with hundreds of small NOX cylinders then selling balloons full for 1.50 a go. Seems this is a legal 'high', and bloody popular

    Cream Supplies - Cream Whipper, Nitrous Oxide Cartridges for Making Whipped Cream & CO2 Soda Making Equipment. Molecular Gastronomy.

    My lad has made a few bob from it!!!

    Maybe this news will give the powers that be the excuse to ban or tax it

  6. #6
    Thailand Expat
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    This is what the real boys use.Lot cheaper. Nitrous - Wikipedia, the free encyclopedia Make cars and bikes go like f...!

  7. #7
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    Ah yes....advanced Western technological development. We are so enriched and fortunate.

  8. #8
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    Quote Originally Posted by Texpat View Post
    I'm weary of being doomed all the time.

    Can't we find something that will make our lives better?

    When was the last good-news story you heard?
    Not good copy, Tex. Doesn't sell advertising nor promote mondless consumption, don't ya know.

  9. #9
    I am in Jail
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    nitrous is great stuff.

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