Euglena, a single-celled microscopic algae, known as Midorimushi in Japanese, is cultivated in a reactor at the Euglena Co. laboratory in the University of Tokyo, in Tokyo, Japan, on Wednesday, May 8, 2013. Euglena Co., listed on the Mothers section of the Tokyo Stock Exchange in 2012, researches, develops, produces and sells Euglena and related products such as functional foods containing the algae. The company is also researching and developing Euglena as a raw material for second generation biofuels. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images
