Greenpeace's three year investigation into Brazil's booming cattle industry - the largest source of deforestation in the world and Brazil's main source of CO2 emissions - has found that some of the brands that we all know and love could be implicated in the widespread deforestation of the Amazon rainforest. The investigation also uncovers how the Brazilian government is bankrolling the destruction and is undermining its own efforts to tackle the global climate crisis. Documenting man-made forest fires to clear land for farming and cattle. In very large areas the deforestation has caused devastating desertification of the land.