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Chlorella is a single-celled, green algae that grows in the sunniest parts of freshwater bodies. According to Dr. Beth M. Ley, author of the book Chlorella: The Ultimate Green Food, it is one of the Earth’s oldest living organisms, and has been harvested as a food source for thousands of years. However, a true understanding of chlorella’s nutritional value only emerged in the 20th century, when Western scientists began to study its chemical composition. By…