Prashant is a founding Co-Director of the pan-university Institute for Sustainability, Founding Director of the Global Centre for Clean Air Research (www.surrey.ac.uk/gcare) at the University of Surrey, a Full Professor/Chair in Air Quality & Health, the founder of Guildford Living Lab (https://tinyurl.com/GuildfordLL), a Trustee at ZERO, an Adjunct Professor at Trinity College Dublin, and a Guest Professor at Southeast University. As an Associate Dean (International), he provided international leadership to the largest faculty. Earlier, he served as a Reader/Senior Lecturer/Lecturer. He obtained his PhD (Engg) from the University of Cambridge after winning a Cambridge-Nehru Scholarship and Overseas Research Scholarship award, and his Master's in Environmental Engineering & Management from the Indian Institute of Technology, Delhi, with CGPA 9.8/10 & rank 1.Clarivate recognised him in the top 1% of the Global Highly Cited Researchers, 2022 & 2023. He won the University of Surrey's "Researcher of the Year Award" in 2017, the 2023 Haagen-Smit Prize for the best paper, and received the 2023 Haagen-Smit Clean Air Award from the California Air Resources Board—regarded as the 'Nobel Prize' for air quality achievements—for his transformative contributions, impact, and exceptional leadership in the field.His fundamental and application-oriented cross-disciplinary research develops the interfaces of clean air, human health and smart/sustainable living in cities/megacities. His research projects are focused on multidisciplinary areas of air pollution monitoring/modelling, low-cost sensing, citizen science participation, nature-based solutions for climate change mitigation and the development of innovative technological and passive (green infrastructure) solutions, tools and guidance for both developing and developed world.He authored >400 journal articles, with >27,000 citations, h-index 78; i10index 333, secured £15M of individual research funding from >£45M projects, funded by the UKRI/EC/industry/charities/international funding bodies. He is a PI/Director of the £1.45M UKRI-funded RECLAIM Network Plus.He has developed a network of collaborators across four continents and works closely with industrial partners. He is Editor-in-Chief for ‘Atmosphere’, founding Speciality Chief Editor of Climate Change & Cities and serves editorial board of several journals (Scientific Reports).He advises local/international bodies and serves as a board member of UK/worldwide funding agencies. His research has featured in well-read media outlets (BBC/The Times).