Brazilian artist Mundano has used the remains of burned trees from the Amazon rainforest to create a huge painting in Sao Paulo. The mural painting on the side of a building shows a firefighter standing among fallen trees, fires and dead animals. I'm using evidence of the crime, said Mundano. He calls the 1,000-square-metre artwork an act of "artivism". The word artivism suggests a link between art and activism. Mundano travelled more than 10,000 kilometers across Brazil during June and July. He collected the remains of burned trees and plants from the Amazon rainforest, the Pantanal wetland area, the Cerrado tropical savannah and the Atlantic Forest. He also met with firefighters and volunteers to listen to their stories. Brazilian President Jair Bolsonaro has struggled to keep a promise to end illegal forest clearing in the Amazon area. It is the world's largest rainforest. His calls for more farming and mining have, in some cases, led to increases in illegal forest clearing. In August, satellites images recorded 28,060 fires in the Brazilian Amazon area. Scientists say the Amazon plays an important part in easing the effects of climate change. Its plant life takes large amounts of carbon dioxide from the air and stores it. This mural is a protest, a cry for help, said Mundano. I support fire brigades and also for this fire culture to stop, it's leading us to self-destruction.