TLF ID M019963
Dr Paul Fraser has been part of the Greenhouse Gas team at the CSIRO for over 40 years. His team measures the carbon dioxide in the atmosphere, by taking and analysing air samples from different locations around the world. Paul explains that there are a number of versions of carbon dioxide, made up of different isomers of carbon. What are the three distinct isomers of carbon that he names? How can scientists tell when carbon dioxide has come from fossil fuels? What does the graph at the end of the clip show?