It’s the economics, stupid. Or so says Exxon Mobil Corp. The economics of solar and wind energy is why the world’s largest publicly traded energy company is not making any bets on the environmentally friendly power sources now, and does not plan to any time soon, according to an article from The Globe and Mail. Despite the growing popularity of renewable energy sources — top competitors such as BP PLC and Chevron Corp. dabble in it — Exxon has shied away from investing in solar and wind energy, arguing that the business is viable only with Uncle Sam’s help. For the full article, see the following link.