Alastair is currently professor of atmospheric science at University of York and Science Director at the UK National Centre for Atmospheric Science. He is a Fellow of the Royal Society of Chemistry and has held their John Jeyes lectureship in Environment, Energy and Sustainability. Alastair's research expertise is in reactive atmospheric chemistry, particularly that of organic compounds in the troposphere and their role in health, ozone and aerosols.

Judith is a permanent Professor of Physical and Chemical Atmospheric Processes at the Federal University of Rio Grande do Norte (UFRN) in the city of Natal/Brazil. She studied Geophysics at the University of Cologne/Germany and did her PhD at the Max Planck Institute for Meteorology at the International Max Planck Research School for Earth System Modelling in Hamburg/Germany, before spending her postdoc and working at the Brazilian National Institute for Space Research in São Paulo/Brazil for a period of six years.

Colette Heald is an Associate Professor in the Departments of Civil and Environmental Engineering & Earth and Planetary Sciences at MIT. She received her undergraduate degree in Engineering Physics from Queen’s University in Canada in 2000, and her PhD in Earth and Planetary Science from Harvard University in 2005. She held the NOAA Climate and Global Change postdoctoral fellowship at the University of California Berkeley from 2006-2007.

Jim Crawford received his B.S. in Mathematics from the United States Military Academy in 1986 and his Ph.D. in Atmospheric Chemistry from the Georgia Institute of Technology in 1997. Since that time, he has been a research scientist at NASA’s Langley Research Center. From the start of his graduate studies in 1991 and throughout his career, his research has been associated with airborne field studies conducted across the globe by NASA’s Tropospheric Chemistry Program and collaborating partners.

Paul Beukes is a Chief Research Scientist at the North-West University (NWU), Potchefstroom Campus, South Africa. He received his PhD (Chemistry) in 1999 from the then Pothefstroom University for CHE. Paul worked in the metallurgical industry for almost a decade after completing his PhD, holding various senior positions such a production manager and operations manager at large ferrochromium smelters. In late 2007 he returned to academia and is currently co-managing the Atmospheric Chemistry Research (ACRG) and Chromium Technology groups (CTG) at the NWU.

Megan was born in Boulder, Colorado and raised in the mountains west of Boulder in a home that is off the grid, powered by a wind generator and solar photovoltaic modules. This unique experience is the foundation of her career as an atmospheric chemist. In 2000, Megan received two Bachelor of Arts degrees, in Chemistry and in Spanish Literature, from Colby College in Waterville, Maine. She continued her education at the University of Colorado in Boulder earning a Master of Arts and a Ph.D. in environmental engineering in 2002 and 2006. Megan conducted her Ph.D.