A reader wonders when hydrogen-powered vehicles will rule the road. Umbra takes a look under the hood.
A reader wonders where to look for the greenest threads. Umbra stitches together a plan.
A reader worries about emissions from a coal-fired pizza oven. Umbra slices in.
A reader says her contraceptive is over-packaged. Umbra says you should see the packaging that kids come with these days.
A reader wonders what to do with the low-nutrition food that's being donated for feeding the hungry. Umbra says put it in the bank.
A reader wonders whether two hearts can meat. Umbra says vegan start by accepting each other for who we are.
A reader wonders how best to swaddle the little poo machine. Umbra says it's a wrap.
A reader worries about fracking water tainting beer. Umbra hops to it.
A reader wonders if there's a better alternative than the dreaded, plastic-filled goodie bags. Umbra reaches into her huge bag of tricks.
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