UN talks on Climate Change are nearing a close with no clear consensus yet in sight. The meeting is aimed at laying the groundwork for progress at a major climate change meeting in Mexico later this year.While many of the negotiators for a global climate change accord consider it a pressing issue, there is less agreement on how to share the burden of tackling the problem. Last year, the international community failed to reach an agreement that included legally binding emissions reductions at a high-profile meeting in Copenhagen. This week's meeting in the Chinese port city of Tianjin is the precursor to the world's next big attempt, at Cancun, Mexico, later this year.