Investors shrug off climate summit investment pledges

By Sinead Carew and Caroline Valetkevitch Dec 7 (Reuters) - World leaders gathered in Paris for climate talks are pledging billions of dollars to improve the environment, but green-company investors are not impressed by the promises, seeing little immediate benefit to the companies they buy. As the two-week United Nations summit enters its final phase, clean energy stocks have gained little ground, and several fund managers say they have not been doing any additional buying as a result o