Guardian: The leaders of the G8 rich nations have agreed to adopt a goal of at least halving greenhouse gas emissions by 2050. The communiqué says that mid-term goals will be needed to hit the shared target for 2050, but that it would be up to individual countries to adopt them. Here is the full text of the statement (the numbers refer to the paragraphs’ position within the overall G8 document). Climate change 22. We reconfirm the significance of the Fourth Assessment Report of …