FACTBOX: Plans for tackling climate, from U.S. to China

(Reuters) - About 1,000 delegates from more than 150 nations will meet in Ghana from August 21-27 for talks on a new climate treaty to succeed the U.N.'s Kyoto Protocol.

THE PROBLEM

A U.N. panel of climate experts says it is more than 90 percent probable that greenhouse gas emissions, mainly from burning fossil fuels, are to blame for a warming set to cause more droughts, floods, heatwaves, crop failures and higher seas.

World emissions from human activities rose to 49 billion tonnes in 2004 from 39.4 billion in 1990. The U.N. Climate Panel projects they will rise by between 25 and 90 percent above 2000 levels by 2030.

SOLUTIONS

GLOBAL - About 190 nations agreed at a meeting in Bali, Indonesia, in December to work out a world treaty by the end of 2009 to succeed Kyoto, comprising deeper emissions cuts by rich nations and action by poor countries to slow rising emissions. The Accra talks are the third meeting on that path.

KYOTO - Kyoto binds all rich nations except the United States to cut emissions on average by 5 percent below 1990 levels by 2008-12. Kyoto backers have agreed to consider cuts of 25-40 percent below 1990 levels by 2020. But almost no governments are setting such tough goals.

G8 - Leading industrial nations agreed at a Group of Eight summit in Japan in July to a "vision" of cutting world emissions of greenhouse gases by 50 percent by 2050.

DEVELOPED NATIONS' TARGETS