BBC: The Brazilian government has announced that it aims to achieve a reduction of at least 36% on its carbon emissions by the year 2020. If it meets its pledge, greenhouse gas emissions would be near 1994 levels. The proposal, which is not a binding target, was revealed in advance of the major UN summit on climate change to be held in Copenhagen in December. Brazil hopes to put pressure on richer nations to declare their intentions and break the deadlock in the …