Ask Umbra
Grist’s destination for advice on life during climate change. Est. 2002
Past Umbra
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Umbra on biodiesel vs. straight veggie oil
Dear Umbra, I have the opportunity to convert a 1979 non-turbo Mercedes into a non-diesel. The question I have is: to which should I switch, biodiesel or vegetable oil? I can’t seem to find out which one is best, just that these two are better than any petroleum-based fuels, which we already know (thanks for […]
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Umbra on true hybrids
Dear Umbra, I read the New York Times article that reported auto manufacturers are using hybrid technology to boost power rather than improve mileage. It specifically mentioned the Honda Accord, claiming that the mileage difference between the six-cylinder and the hybrid is minimal. What are the facts here? Is there a hybrid that really, actually, […]
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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 […]
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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 […]
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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, […]
