G8 discussions on Tuesday and Wednesday focus on climate change. Leaders will try to move U.N.-led talks forward, aimed at forging a new global warming accord by the end of next year. Thus far, climate negotiations have stalled because of deep disagreements over what targets to set for greenhouse gas reductions, and how much developing countries such as China and India should be required to participate.

China and India say it is up to the developed world — the biggest polluters — to take the lead in the fight against climate change. But President Bush has said that developing nations must also sign on to make any global deal work. Read more, including information about the G8’s Africa agenda, in this NewsHour report.

Meanwhile, Switchboard, the NRDC blog, breaks down why the talks — and specifically a preparatory meeting held last month in Seoul — may signal a breakthrough for setting long-term global emissions cuts pledged by major developing nations.

Over at The New York Times‘ Dot Earth blog, Andrew Revkin posted the entire Declaration on Environment and Climate Change with his own annotations and insights. To get a sense of how some view this declaration, while talking to WNYC’s Brian Lehrer this morning, Revkin compared the declaration’s goal of cutting 50% of emissions by the year 2050 to a students who says, “I’m going to get straight A’s next year, but I don’t feel like studying.”