In the first 26 days of August alone, 1,114 square kilometres of Brazil's Amazon rainforest, an area equivalent to the size of Hong Kong was on fire.  Tens of thousands of fires, far more than last year, have broken out and nbunrned off hundred of kilometres of one of the world's most diverse and unique habitats. But this isn't a natural distaster.  James Haines-Young speaks to prominent climate scientist, Carlos Nobre, and Natalie Unterstell, Director of policy at Talanoa solutions in Brazil about who is starting these fires and why.