Dr Iain Stewart traces the history of climate change from its very beginning and uncovers some of the great unsung heroes of climate change science.

Dr Iain Stewart investigates the counter-attack by global warming sceptics in the 1990s. At the Rio Earth Summit it seemed the world was united - but it didn't last.

Dr Iain Stewart looks at how scientists can predict what changes global warming will bring with a journey to the frontline of research today: Greenland.