Financial Times: High quality global journalism requires investment. Please share this article with others using the link below, do not cut & paste the article. See our Ts&Cs and Copyright Policy for more detail. Email ftsales.support@ft.com to buy additional rights. http://www.ft.com/cms/s/0/2fc5662e-0643-11e5-b676-00144feabdc0.html#ixzz3bmLhqt1H Six of Europes largest oil and gas companies have banded together for the first time to ask the UN to let them help devise a plan to stop global warming. In a sign of...