The science behind a climate headline Rachel Pike on

In 4 minutes, atmospheric chemist Rachel Pike provides a glimpse of the massive scientific effort behind the bold headlines on climate change, with her team — one of thousands who contributed — taking a risky flight over the rainforest in pursuit of data on a key molecule. (Recorded at TEDGlobal University 2009, July 2009, Oxford, UK. Duration: 4:14)

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