An innovative campaign to promote sustainable development has been launched at Zurich airport: part of a bid to spread the word to two billion people between now and 2030.

Using the online hashtag #YouNeedToKnow, the initiative is one of the first things travellers see when they transit through the Swiss hub.

The idea has also taken off in Geneva and Heathrow airports, with help from international shopping chain Dufry, as the UN’s Aziyade Poltier-Mutal told Daniel Johnson.

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