Bill Gates’ investment fund, Cascade Investments decided to sell the 20% stake it controlled in Pacific Ethanol, a Sacramento, Calif.-based company. Stock tumbled, 22% when the news came out yesterday to $4.43 a share. This company’s shares traded hands at $42 a share just a year-and-a-half ago and is a perfect example of how hype is at play when it comes to Green investment. Continue Reading at Earth2Tech.