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/0/3115a362-20c0-11e5-aa5a-398b2169cf79.html#ixzz3enrrLza0 Tom Steyer, the hedge fund founder bankrolling a campaign for action to curb global warming, called on Republican mega-donor David Koch to make his views on climate change...