Reducing greenhouse gas emissions is not enough to reverse global warming. Ending deforestation is an equally, if not more important, objective and achieving it will involve providing direct compensation for protecting intact forests, write Tasso Azevedo and Ilona Szabó

The government of Tristan da Cunha, in the South Atlantic, has declared a 687,000 square kilometre (265,000 square mile) marine protection zone in the territory’s waters – an area almost three times the size of the UK.