"Breathing clean air is every child's human right," says grassroots campaigner Rosamund Adoo-Kissi-Debrah, sharing the heartbreaking story of her seven-year-old daughter, Ella Roberta, whose asthma was triggered to a fatal point by air pollution. Now, Adoo-Kissi-Debrah is on a mission to raise awareness about the harmful effects of unsafe air on our health and the planet. In this moving talk, she details why governments have an urgent responsibility to take action on air pollution -- and ensure that all children have a chance to live full and healthy lives.