Eine unbequeme Wahrheit
He created and starred in the documentary "An Inconvenient Truth...Or Convenient Fiction?", a rebuttal of many of the claims in Al Gore's "An Inconvenient Truth", saying that while Gore is right about many things, he goes too far in predictions of doom. In 1994, he has co-authored an annual "Index of Leading Environmental Indicators" (1996–2008), published by the Pacific Research Institute, issued each Earth Day.