audio by title an ocean of air why the wind blows and other mysteries of the atmosphere

We walk through it, it is always all around and above us, it keeps kites aloft,  turns windmills and we even breathe it, yet few of us think twice about the earth’s atmosphere, what it is made of , how much it weighs and how it makes life on earth possible. At 9PM, we talk with award-winning science writer GABRIELLE WALKER about the discovery of the hole in the ozone layer and how the radioactive Van Allen Belts help create the beautiful auroras as well as keep us from being flash fried from solar flares.