Reuters: Brazil's greenhouse gas emissions (GHG) fell 4.9 percent in 2012 as declining deforestation rates and a drought-induced drop in cattle herds outweighed increased emissions from the energy sector, an independent study showed on Thursday. The nation's output of heat-trapping gases, which are blamed for climate change, hit 1.484 billion tons of carbon dioxide equivalent (CO2e) last year, according to Climate Observatory, a network of nongovernmental organizations that includes World Wildlife Fund,...