Artist Angela Palmer embarked on a mission two years ago to try to capture the physical properties of climate change - by finding what is thought to be the most polluted air on Earth, and the purest.
Some of the discoveries Angela Palmer made on her journey - to Linfen in China, and Cape Grim in Tasmania - are on show at the Wellcome Collection in London. Take a tour with the artist herself.
Not all images have captions. Images courtesy Angela Palmer and the Wellcome Collection.
Music courtesy KPM Music.
Slideshow production by Paul Kerley. Publication date 4 November 2009.
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