A reader wonders if kids raising money by washing cars are actually doing real harm to the planet. Umbra says traditional car-wash fundraisers are all wet.
A reader asks whether washing fruits and vegetables does the trick in eliminating your exposure.
by Ask Umbra. Send your question to Umbra! Q. Dear Umbra, Which is greener—real Christmas trees or fake? I know you answered this question in the past, but I wonder if there’s any new data? Ginger C. Littleton, Colo. A. Dearest Ging...
By Ask Umbra A reader wonders about the greenest beverage packaging. Umbra sorts through the materials.
By Ask Umbra A reader wonders how to network sustainably. Umbra consults the cards.