The Singapore pavilion at the United Nations climate talks has been offering attendees free beer with an ingredient surprising to many: treated wastewater.

In the sprawling pavilion section of the United Nations climate talks, where countries, nonprofits and tech companies use big, flashy signs to get the attention of the thousands of people walking through,

The NEWBrew cans have been a surprise hit with people in Baku, alongside other eco-innovations. View on euronews