Julio is a chemical and environmental engineer, passionate about increasing sustainability in universities, and transforming them in change agents within cities. He got his PhD on Air Quality at the Technical University of Madrid (UPM) in 2003. Currently, he is Associate Professor, and MC/MPA candidate at Harvard Kennedy School. He is the Spanish representative at the Task Force on Integrated Assessment Modelling within the UN Convention on Long-Range Transboundary Air Pollution (CLRTAP). He is co-author of more than 50 papers and book chapters. He has participated in many international workshops and conferences on urban air quality, climate change and sustainable human development. He has participated in more than 50 research works.