The greenhouse effect and the theory that human carbon emissions are warming the planet come under direct attack in this Channel 4 UK production, which argues that the scientific consensus on global warming rests on shaky data and flawed computer models. Scientists and researchers appear on camera to challenge the methods used to reconstruct historical temperature records and to question whether rising CO2 levels can be reliably linked to the warming trend measured since the industrial era. The film also turns its attention to the people pushing climate action, suggesting that funding pressures and political incentives shape which findings get publicized and which get buried. PBS declined to air it, calling it unbalanced, and it later found a broadcast home on the Discovery Channel instead. Made in 1990, before climate science had the volume of satellite and ice-core data available today, it stands now as a document of the early skeptic position rather than a current scientific argument, built entirely from interviews and no location footage.