Agence France Presse: China will join up with the US Chicago Climate Exchange to establish a carbon emission market in the city of Tianjin near Beijing, state media reported Friday. Tianjin authorities, oil giant PetroChina and the Chicago Climate Exchange will sign an agreement for the exchange, the first in the nation, as early as this month, the 21st Century Business Herald reported, citing unnamed sources. The exchange, part of government plan to develop the Binhai New Area in Tianjin, will …