Reuters: Companies that aim to improve energy efficiency may not have the hype of renewables or biofuel firms but they offer better returns, the fund manager running Jupiter’s 300 million pound Ecology fund (JEF) said. "I don’t care if it’s not sexy," said Charlie Thomas, who cycles to work, owns a low-emission car and buys organic foods, and whose fund had its 20th anniversary on Tuesday. "That’s where the returns are," he said. "The glamour in climate …