As 2013 comes to a close, EurActiv looks back at the stories that had the biggest impact and were mostly widely shared on social media.

From the debate about a British exit of the European Union to budget negotiations, banking union but also toilet flushing standards, GMOs and shale gas, here are the stories which most fired up your imagination, below.

To read the original article: EurActiv's most popular stories of 2013 | EurActiv