Another day of hot and stifling weather is in store for millions of Canadians in southern and eastern Ontario, and through eastern Quebec, the Maritimes and much of Newfoundland. That has the lack of air conditioning in many school classrooms becoming a heated issue. Concerned students, parents and teachers in Ontario are urging school boards and governments to address the problem. Katherine Ward has this story and more in Health Matters for June 20, 2024.