EARTH - THE CLIMATE WARS 3

Earth: The Climate Wars, Episode 3 (final ep)

New Challenges: Having explained the science behind global
warming, and addressed the arguments of the climate change
sceptics earlier in the series, in this third and final part
Dr Iain Stewart looks at the biggest challenge now facing
climate scientists. Just how can they predict exactly what
changes global warming will bring? Its a journey that takes
him from early attempts to model the climate system with
dishpans, to supercomputers, and to the frontline of climate
research today: Greenland.