Umbra Fisk

Ask Umbra®

Advice for Living Green

Yours is to wonder why, hers is to answer (or try). Send your green-living questions to Umbra.

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Umbra Fisk is Grist Research Associate II, Hardcover and Periodicals Unit, floors 2B-4B.

Umbra on organic cashews

Dear Umbra, I work in a grocery store. Recently a customer refused to purchase our cashews because they weren’t organic. Does it really matter if …

Umbra on herbicides and lawns

Dear Umbra, My husband just spread some very toxic weed-killer on our lawn, and I told him there must be a safer way to get …

Umbra on herbicides

Dear Umbra, How do herbicides (organic, if such exist, or non-organic) work? David Burch South Bend, Ind. Dearest David, Herbicides are considered a subcategory of …

Umbra on water vapor and climate change

Dear Umbra, Coming from a scientific background, I was under the assumption that water vapor was the worst — or you could say the best …

Umbra on the greenhouse effect

Dear Umbra, Man-made greenhouse gases are blamed for recent global-warming trends. But man-made greenhouse gases account for only 5 percent of the greenhouse effect. Water …

A climate-change compendium

Dear Umbra, I know you don’t make up questions, but in this instance I think it’s acceptable. Could you suggest a collection of resources on …

Umbra on climate-induced relocation

Dear Umbra, Given that there is a possibility/probability that sea levels will rise significantly [due to climate change], and that some parts of the world …

Umbra on climate-change patterns

While I am in no doubt about the effect of human activity on climate change, I have a friend who is convinced that even if …

Umbra on global warming

Dear Umbra, The many articles on global warming conclude with something about the inherent complexity and uncertainty of the issue. So exactly what is the …