An article published in the journal ‘Science’ has said that efforts by countries and companies to achieve ‘zero net deforestation’ may be having the unintended effect of rainforests being replaced by less valuable plantations. As the approach does not distinguish clearly between the different values of replanted areas and natural forests, it means some countries are guilty of replacing their native forests with exotic species. A more favourable way of protection would be for companies, states and other groups to set separate reduction targets in forest loss and for reforestation efforts.