Let’s face it: Some beers only taste right with a wedge of lime. But does that little slice of green mean that the bottle has to have a not-so-green ending? Umbra squeezes in a little research on this wedge issue.
This year marks the 10th anniversary of our Ask Umbra advice column, and to celebrate, we’re pulling a favorite gem of eco-advice out of the archives each week.

Spared by climate change: 10 best cities to ride out hot times
This pedal-powered contraption can run a computer or churn butter
Zen and the art of bridge maintenance
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