Brazil to survey Amazon rainforest
The Brazilian government has announced that it plans to undertake the huge task of recording an inventory of the trees in the Amazon rainforest.
The Forestry Ministry said the census would take four years to complete, and would provide detailed data on tree species, soils and biodiversity in the world's largest rainforest.
The last exhaustive survey was carried out more than 30 years ago.
Luis Meneses runs the Global Canopy programme, an alliance of universities and research centres around the world studying ways to save the world's forests.
He told the BBC's Adnan Nawaz how the fight is going at the moment