Reuters: Tension between the European Union and poor countries could undermine U.N. talks on agreeing 2020 targets to preserve nature’s riches that provide clean air, water and medicine, a top conservation official said. The October 18-29 talks in the Japanese city of Nagoya also aim to seal a treaty that outlines rules for access to genetic resources and discoveries, potentially a big source of cash for poor nations when dealing with drug and agricultural firms. “This is going to go to …