What are governments doing to tackle Canada's wildfires?

Smoke from Canada's wildfires is choking millions of people along America's east coast. Global warming is to blame, and the impact of human-induced climate change has long been felt worldwide. So what are governments doing to tackle it? Join host Imran Khan. Guests: Dr. Maria Neira - Director of Public Health, Environment and Social Determinants of Health at WHO.  Emma Bud - A Clean Air Lawyer at Client Earth. Abhiir Bhalla -  Adviser to the Commonwealth Human Ecology Council board.