Next month, German Chancellor Angela Merkel will convene a summit of the G8 countries, which will issue a joint declaration on climate change. Here's how that's going:

A draft proposal dated April 2007 that is being debated in Bonn, Germany, this weekend by senior officials of the Group of Eight includes a pledge to limit the global temperature rise this century to 3.6 degrees Fahrenheit, as well as an agreement to reduce worldwide greenhouse gas emissions to...