The cleanest air in the world is at Tasmania's Kennaook Cape Grim. It's helping solve a climate puzzle

Living in smog filled cities can feel stifling. But there's a place in Australia where the air is so clean - it's considered among the purest in the world. On the far northwestern tip of Tasmania sits Kennaook Cape Grim. Winds blowing in from the wild southwest brings air that's free from pollution. So, scientists use the site to monitor the planet's baseline atmosphere, and they're now embarking on a new project to unlock a mystery in the Southern Ocean that could further help in understanding the impact of climate change.