Climate change is a public health care emergency. While the connection between public health and climate change may seem abstract to some, Sheridan-Gonzalez sees it every day. In fact, climate change is a public health care emergency, says Fernando Losada, director of environmental health and climate justice for National Nurses United (NNU). That’s why Losada and other nurses’ union members showed up by the thousands at the People’s Climate March in New York City September 21. Climate justice, climate justice!”“The connection between public health and climate can never be separated because what is bad for the planet is bad for health,” Gallagher said.