33 percent of the world's population owns a pet: how do we calculate its carbon footprint and what can we do to reduce it? According to one recent study, around 90 million households in the EU have pets and 33 percent of people worldwide are dog owners. But should we rethink pet ownership for the benefit of the environment? Is having a pet worse for the environment than flying? (Aoife Donnellan, Euronews.green)

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