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Geo-Engineering to stop Climate Change

MattSparkes writes "Following the latest report of the United Nations climate change panel, there has been a flurry of renewed interest in so-called geo-engineering. This is the theory of using technological schemes to stop climate change. These can range from sun-shades orbiting the Earth, to pumping millions of tonnes of sulfur into the atmosphere to the bizarre idea of painting the ground white to reflect more light. Let's reduce our emissions now, before I have to go and paint my roof bright white." Thanks to jamie for pointing out another potential solution of seeding the southern oceans with iron to spur plankton growth.

3 of 551 comments (clear)

  1. next use for algae/plankton by nietsch · · Score: 4, Interesting

    Harvest the top layer of them, concentrate and convert them to biofuel using TCP (total conversion proces, a kind of wet pyrolysis)
    A biofuel tanker with the appropriate machinery would go out on the ocean with a load of iron (or iron rich earth), spread the iron and at the same time harvest the algae and convert them to biofuel. Since it injects more minerals than it harvests, more carbon will be removed form the carbon cycle than would be harvested with the biofuel.
    Just an idea I would not like to see patented.

    --
    This space is intentionally staring blankly at you
  2. Re:anything by UbuntuDupe · · Score: 4, Interesting

    Trying to control or influence all of them is nigh on impossible, short of making the things you describe illegal, which would probably lead to a revolt.

    False. If you just assess the actual costs of these activities on the people that do them, they have a strong financial incentive not to do them -- this is how it works with every product on the market. You don't need to, for example, encourage people to avoiding eating "unnecessary" foods -- the "unnecssary" expense already does that. If food was as socialized as roads and air currently are, I can 100% guarantee you we'd see proposals to give tax credits to people who exercise less than 1 hour per week in the hopes that this would lead them to request less food from the Food Department. (Just as you see proposals for tax credits for switching to specific energy-efficient technologies.) People who eat too much would be derided as "stupid, thoughtless, and self-centered."

    If you simply taxed in proportion to the costs imposed on others, people would be free to do whichever energy-saving alternative is least inconvenient for them. Even if they do nothing, hey -- at least you have a huge war chest with which to research better technologies or reduce the impact.

    If you can't bring yourself to advocate that, you have to keep in mind any other solution is probably less efficient. And if you can't trust a government to administer that properly, you have to think about what it would do with a less efficient solution.

  3. Re:anything by nightfire-unique · · Score: 5, Interesting

    Firstly, I respect your choice not to drive.

    Having said that, I do drive. I actually ride to work in the summer (mainly for health), but in the winter, I drive. Yes, I burn oil to do this, and that is a very bad thing. I will move to electric the second I can afford an electric car. I will be an early adopter.

    I think what you need to consider is that "this kind of crap" is not just needed because many of us drive oil burning cars. There are many sources of CO2 emissions and you are 90% as guilty as I am at producing them. You and I are westerners. We waste enormously. I don't know if you realize how much you waste, relative to the vast majority of the inhabitants on this planet.

    So you don't drive. Cool. I appreciate that. Do you own a leather couch? A private condo? A house? Do you take hot showers in the morning? That water was likely heated by electricity generated at a coal power plant.

    Do you eat processed food? Lots of meat? Do you take jets to go on vacation? Perhaps you buy musical instruments? Computers?

    Cars are ONE waste of energy, but there are thousands.

    Living "in harmony with nature" to some people means more than not driving, it means abandoning our modern society: the chemicals we use to grow enough food to feed everyone, the dams we use to prevent flooding, the fire planes we use to stop forest fires, the hot showers, the delivery of luxury sofas, and abandoning worldwide travel.

    To me it means nuclear power and emission free transportation. If the science supports "meddling" with atmospheric properties (and I don't think it does in this case) then I don't have a problem with it to preserve our way of life.

    Don't forget - you will always eat. You and I are rich. It is the poor who will starve when the price of food triples.

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    A government is a body of people notably ungoverned - AC