Xinhua: Chinese Vice Premier Li Keqiang on Friday said the international community should work together to overcome the challenges of climate change. Li made the remarks when meeting with Christiana Figueres, executive secretary of the United Nations Framework Convention on Climate Change (UNFCCC). Li said all countries should join together in the struggle against climate change with concerted efforts based on the UNFCCC and the Kyoto Protocol, as well as the principle of “common but …