Beyond Montreal: a year on has the world lived up to the promises made at nature summit?

The UN convention on biological diversity, Cop15, was held in Montreal, Canada, a year ago. Photograph: Eric G Gagnon/Courtesy of Environment and Climate Change Canada

Governments risk another decade of failure on nature loss if they do not implement a landmark agreement in full, the UN’s acting biodiversity chief has warned, 12 months after the deal was struck.

As anticipation begins for the next summit – which was confirmed last week to be hosted by Colombia – the legacy and implementation of the last, historic agreement remains uncertain.