Environmentalists and Indigenous leaders held signs Tuesday in front of the United Nations buildings in Geneva, where talks for a global accord to end plastic pollution are taking place, asking nations to show courage and agree to a strong treaty.

A last-ditch push to seal a historic pact on plastic pollution, hailed as the biggest environmental deal since the Paris climate accord, is teetering on the edge of collapse. Negotiators from more than 180 countries,

Negotiations to debate the terms of a global treaty to curb plastic pollution are proving difficult, the European Union environment commissioner said on Tuesday.