Calls are growing for major reforms to UN biodiversity summits as countries fail to deliver on their promises to halt the destruction of the natural world, with governments likely on track to continue their record of never having met a target in the 34-year history of the convention.

Two weeks of negotiations at biodiversity Cop17 in Yerevan, Armenia, concluded on Saturday morning with countries vowing to redouble their efforts to meet this decade’s targets, which include commitments to protect 30% of the planet for nature, restore nearly a third of Earth’s degraded ecosystems and reform $500bn (£410bn) of environmentally damaging subsidies .

Agreed just four years ago by nearly every government on the planet, they aim to transform humanity’s relationship with nature . Despite progress in some areas, governments are way off track on meeting almost all of the targets.…