Flying Through the Amazon's Prehistoric Air
Episode 3 | 3m 15s Video has closed captioning.
The Amazon rainforest covers over 2 million square miles of the South American landmass. It absorbs so much carbon and produces so much oxygen that scientists call it “the lungs of the Earth.” Now, researchers from Pacific Northwest National Laboratory in Richland, Washington have encountered a bank of air so pure it changes our understanding of how clean the atmosphere can be.
Problems Playing Video? | Closed Captioning