A report from Prince Charles' International Sustainability Unit has found that we are still some way from realising the full potential of tropical forests in stabilising global climate, agricultural yields, ecosystem services and local livelihoods. The report, Tropical Forests: A Review, argues that forests have such incredible potential because of their dual role as carbon sinks. Less deforestation means less carbon is released and as the forest continues to grow, more carbon is locked in to the biomass. The report also highlights the importance of tropical forests to regional and global rainfall cycles. This is particularly relevant for Brazil where a severe drought has impacted cities and major agricultural areas. Modelling has shown that deforestation in the Amazon and Congo Basin could affect rainfall patterns across Europe and North America. The report urges forests be prioritised as a significant solution as we approach binding international agreements on climate change.