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Birth control: Only controversial with your great-aunt who toyed with the idea of becoming a nun before having 12 kids — and the Republican Party. For the rest of us non-Duggars, birth control has been a huge win for humanity and the Earth. But are there greener methods to that sexy madness? From a GINK in Seattle:

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“[C]an you fill us in on the most eco-friendly forms of birth control currently available?”

Read on for Umbra’s answer. But first, you might want to slip into something more comfortable — she understands if you abstain from abstinence.

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.