Rich nations urged to lend green hand

The Chinese ambassador to the United States has urged developed countries to help developing nations address problems relating to climate change, saying it is a "common but differentiated responsibility" for them all.

"China is ready to maintain close cooperation with the US," Zhou Wenzhong told a forum at the Brookings Institution, a Washington-based think-tank, on Thursday, adding the country will continue to be "an active and responsible participant and contributor" to international cooperation in regard to clean energy and climate change.

Also on Thursday, a group of US scholars led by Steven Chu, US President Barack Obama's choice of secretary of energy and a Nobel laureate, published a key report proposing how the US and China can work on climate change issues in the long run.