Biotechnology is a discipline that combines biology and technology to develop innovative solutions using living organisms or their systems. Applied to the environment, it makes it possible to respond to major challenges such as air pollution. Bioteos uses biotechnology through microalgae to design air purifiers capable of transforming carbon dioxide (CO₂) into oxygen, while eliminating pollutants. This natural and sustainable approach illustrates how life sciences can offer concrete and effective answers to today's health and environmental challenges.