Kenneth C. Johnson, PhD, Adjunct Professor, School of Epidemiology and Public Health, University of Ottawa, was a Research Scientist/Senior Epidemiologist, Public Health Agency of Canada and Health Canada (1982-2013). His work focused on environmental risks and cancer, particularly research on second-hand smoke, active smoking and breast cancer. His perinatal epidemiology included: research on limitations of randomized controlled trials in perinatal research; consulting with the Midwives Alliance of North America (MANA) Statistics and Research Committee 1991-2004; and co-principal investigator of a study of 5,418 planned home births with Certified Professional Midwives in North America, published in the British Medical Journal in 2005. Recent research focuses on vaginal breech birth utilizing an upright position, including being co-principal investigator of the 2004-2011 Frankfurt study of upright breech. Since 2014, he has shifted focus to climate change action and sustainability, co-developing and writing for Below2C.org.