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Past Umbra

  • Umbra on micro-wind

    Dear Umbra, Are there any worthwhile resources or models that would enable me to generate my own electricity in a cost-effective way, using wind power? This is on a one-household basis. Matt PinesToronto, Canada Dearest Matt, In jargon-land, you are interested in micro-wind. Little did you know! Because you are a blessed Canadian, you have […]

  • Umbra on wind farms … again

    Dear Umbra, In your response about opposition to wind farms, you neglected in your enthusiasm to say how much electricity from wind would actually be used and what effect, if any, the farms would have on our overall energy use. Can you cite an example of actual reduction of fossil- and nuclear-fuel use brought about […]

  • Umbra on joining your first environmental organization

    Dear Umbra, I am new to the environmental world, and looking for ways to help and organizations to join. It took me a while to find Greenpeace. I am wondering what other organizations are out there, and my friends (and I’m sure other Grist readers) would also like to know. Ayla Pinus elliottii var. densaNaples, […]

  • Umbra on whether to visit national parks

    Dear Umbra, We are considering a driving vacation this summer with the intent of visiting as many of America’s wonderful national parks as we can — both to enjoy them and to add some money to their coffers, which have been depleted in recent years. But as we all know, burning up lots of gasoline […]

  • Umbra on winning environmental arguments

    Dear Umbra, I’ve recently been debating my cousin about the merits of environmentalism, and he consistently attacks my positions by claiming that the studies that make the case that the environment is in trouble are funded by groups that have a vested interest in maintaining that position. In other words, groups that are devoted to […]