Bendy Estime, a biomedical and chemical engineering Ph.D. candidate at Syracuse University, in Syracuse, New York, has developed a new medium to culture and harvest microalgae. Mr. Estime’s medium, Tris-Acetate-Phosphate-Pluronic or TAPP, can transition from solution to a gel through relatively small variations in temperature. Microalgae are seeded in the medium at 15 degrees Celsius. When the temperature is increased by seven degrees, the medium becomes gelatinous. In this new medium, microalgae grow in clusters that are up to 10 times larger than those grown in the traditional medium. Once they are grown, the temperature is decreased, and the medium is returned to a solution. The algae are separated out through gravity, and can then be harvested.