Microalgae are a frontier which has been intensively worked for at least ten years. Their ability to eat carbon dioxide (CO2) competes with trees: a few square meters of crops are equivalent to 400 plants. Pharmaceutical, food, biogas use, they can consume CO2 from steel mills and transform it to produce oxygen. Andrea Moro and Gabriele Cipri have created Livegreen. The plant belongs to the Tolo green group. The opening of an even bigger one is planned, again in Oristano, they explain. The best known microalgae is spirulina. And photobioreactor technology will make its debut at Expo Dubai 2021: sustainable food and contribution to the planet. Technical partner of the Italian Pavilion that breathes, Tolo Green. Estimates say the market will triple in six years. Only that of plant extracts from 25 to 60 billion. The new habits of consumers who want to reduce the impact of their choices on the planet are making microalgae a product towards which many are approaching, emphasizes Cipri. Collaborations with the University of Naples, Padua, Cagliari, Milan. A few years ago we felt like pioneers, now a Neapolitan pasta producer exports to Australia also thanks to us. Not only protein intake, but also reduces CO2. We could consider it a natural technology. Furthermore, it is also able to recover nitrogen from anaerobic digesters, without dispersing it in the environment, adds Moro. When biomethane grows as an energy source, microalgae will be a central piece. Today in the world with a volume of about 3.4 billion dollars, 3,500 tons of spirulina are produced every year and the FAO, the world food and agriculture organization, is watching this frontier with great interest.