The Group of Eight countries want to work with the nearly 200 states involved in U.N. climate changeClimate change is a lasting change in weather patterns over long periods of time. It can be a natural phenomena and and has occurred on Earth even before people inhabited it. Quite different is a current situation that is also referred to as climate change, anthropogenic climate change, or ... talks to adopt a goal of at least halving greenhouse gas emissions by 2050, according to a draft communique obtained by Reuters ahead of its formal approval. Mid-term goals also would be needed to achieve the shared goal for 2050. The statement puts the focus of fighting global warmingHuman activities are adding greenhouse gases, particularly carbon dioxide, methane and nitrous oxide, to the atmosphere, which are enhancing the natural greenhouse effect. While the natural greenhouse effect is keeping average temperature on earth at about +15°C, this enhanced greenhouse effect ... on U.N.-led talks. European Commission President Jose Manuel Barroso said the deal represented a “new, shared vision” and kept negotiations on track for a global deal in 2009. The G8 would also unveil a series of measures to help Africa and would give USD 50 billion extra in aid by 2010.