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/0/4f66ff5c-1a47-11e5-a130-2e7db721f996.html#ixzz3eRGE8iae Bill Gates is planning to double his personal investment in innovative green technologies to $2bn over the next five years in an attempt to bend the curve in combating...