exacerbations can happen because of climate change. because of more particulates in the air. i think this is a reframing in some ways of climate change and global warming. as more of a public health issue. i think it's been going on for some time. it's the first time we've heard the president speak so forcefully about it. >> doctor what can we do about it? how can we protect ourselves? >> when i talked to the president about that i think there was a message in here for the community at large. also for doctors and nurses to be aware of climate change as potentially being a factor in what is causing some of their patients' illnesses, i think for the average person it's going to be more of a question. recognizing the air quality around you. they got a partnership for example with microsoft and google. to allow people to be empowered, to measure the air quality in their communities, even in their homes. you know right now, i think the message was more for the medical community at large.