She's a climate health crusader. And she's a doctor. Courtney Howard says those two worlds collide more than you'd think.
An emergency room physician says it's the duty of health care professionals to fight climate change. She says as the planet warms, our risks of becoming sick increase. Everything from Lyme disease spreading north, to droughts displacing hundreds of thousands of people. Dr. Courtney Howard looks at the link between human health, and the health of the planet.