Rhode Island Public Radio: Climate change is one of the countrys most serious public health threats, said Gina McCarthy, the head the U.S. Environmental Protection Agency. She spoke to a large crowd of local energy and environmental leaders at an annual conference today hosted by Sen. Sheldon Whitehouse. McCarthy shared one example of a direct public health threat. What you have to realize is that one in 10 kids in the United States of America has asthma, she said. Why am I mentioning asthma related to climate change?...