In September 2015, representatives of 193 nations met in New York City to tackle the globe’s biggest problems. They broke these down into 169 targets under 17 broad goals, such as ending hunger and poverty, cleaning up the environment and providing health care for all — and made the ambitious pledge to achieve these goals by 2030. We’re now halfway towards that mark: how close is the world to reaching the targets?

Test your knowledge of these crucial issues by taking this quiz accessabile from the below link, which explores progress on eight of the United Nations’ Sustainable Development Goals (SDGs).

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