Brazil burned fossil fuels for electricity generation at the lowest level in more than a decade in February, thanks to a boom in wind and solar power. It was the first time the monthly figure fell below 5% since July 2012, resulting in a 29% drop in CO2 emissions. President Luiz Inácio Lula da Silva has vowed to promote green energy in Brazil and restore the country's leadership in fighting global warming. Hydropower in Brazil is at risk due to the destruction of the Amazon rainforest.