To achieve its aim of becoming the first climate-neutral continent, EU countries have been trying to increase their energy production from renewable resources.
Activists say international music tours heavily impact the environment, with concerns about the amount of electricity used to power stadiums.
Some 60 world leaders gather at UN for a "climate emergency" summit aimed at reinvigorating the faltering Paris agreement, at a time when mankind is releasing more greenhouse gases into the atmosphere than at any time in history.
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