Leaders of countries that are home to the world's major tropical rainforests are meeting in Brazzaville, the capital of the Republic of the Congo, for what is known as the Three Basins Summit.
The leaders represent African, South American and South-East Asian nations and they say they are aiming to restore about 3.5m sq km of rainforest across the Amazon, Congo and Mekong basins.
These regions account for 80% of the world’s tropical rainforests, which play a key role in absorbing carbon emissions.