Chandra Sekhar, Ph.D., Fellow of ASHRAE, ISIAQ and Engineers Australia, is currently a Professor and Programme Director (MSc-Building Performance and Sustainability) in the Department of the Built Environment, College of Design and Engineering, NUS. His research interests include thermal comfort, ventilation and IAQ, airborne infection control, energy efficient HVAC systems and building energy analysis. He has more than 300 publications in these fields in international journals and conferences. He has delivered several Keynote talks in international conferences around the world. He has been an ASHRAE Distinguished Lecturer since 2006 and is regularly invited as a speaker around the world. He has been recognised through several awards from ASHRAE, SHASE Japan, ASEAN and Singapore. He is 2023-24 ASHRAE Vice President and Board Member and has also served the ASHRAE Singapore Chapter in various capacities, including as its President during 2010-2011 and as a BOG member. He was an Invited Member of the WHO Environment and Engineering Control Expert Advisory Panel (ECAP) for COVID-19. He is active in Standards and Technical committees in ASHRAE and is also actively involved in standardization activities in Singapore. He is a member of the Standard Project Committee that produced the ground-breaking “ASHRAE Standard 241-2023 Control of Infectious Aerosols” in an unprecedented time of six months. He enjoys nature, trekking and travelling.