Bloomberg: United Nations Secretary-General Ban Ki-moon called on leaders of the Group of Eight industrialized nations to discuss “concrete measures” to support carbon- emission targets set for 2050. “I hope that the leaders of G-8 and the leaders of the outreach program will come up with concrete measures and determined political will to address these issues,” Ban told diplomats at a breakfast seminar in Seoul today. “They have the historical responsibility.” Climate change will be a key …