Mark Chandler, PhD is a scientist, program director and educator with 25 years developing and sustaining social and environmental sustainability programs. For over 20 years, Mark designed and implemented community science programs at Earthwatch Institute resulting in high impact scientific publications, conservation outcomes and the engagement of the public in field research. Most recently, he has worked on community-supported sensor networks to assess air temperature, ozone and particulate matter in southern California, Massachusetts and India. His work seeks innovative solutions to environmental challenges at scale with a focus on improving the health of communities and environment. Mark holds a Ph.D. from McGill University and a B.Sc. from University of Guelph.