Australian 'climatic time machine' tests CO2 effect
The world's biggest open-air experiment involving carbon dioxide has begun in Australia, to see what effects rising levels of CO2 will have on our planet.
Scientists have taken over an entire forest west of Sydney and erected six giant structures to pump CO2 gas into the forest.
The aim is to speed up the levels of CO2, so we can see, now, what life will be like for trees, plants, soil and the climate in the year 2050.
The BBC's Sydney Correspondent Duncan Kennedy went to see the "climatic time machine."
08 May 2012
- From the section Asia