A lecture by: Professor Michael Beenstock, Member of the Department of Economics at the Hebrew University of Jerusalem and Visiting Fellow of Fitzwilliam College, Cambridge.

Climate science is inexact for several reasons. First, for computational reasons climate scientists are forced to make approximations in the application of physical laws. Second, some laws of physics, e.g. regarding clouds, are less exact than others. Third, the sciences of ice flows and interactions between the biosphere and atmosphere are in their infancy. These inexactitudes combined with data error explain why climate models have failed to predict global temperature.

The failure of climate models to explain the halting in global warming since 1995 begs the question whether they are sufficiently reliable to justify carbon abatement policies, which harm economic growth.

The 5^th IPCC Review breaks new ground by attributing sea level rise to global warming despite the fact that there is no scientific evidence for this assertion. Moreover, tide gauge measurements show that sea levels are not rising globally.

Professor Michael Beenstock is a member of the Department of Economics at the Hebrew University of Jerusalem, and is currently a Visiting Fellow of Fitzwilliam College, Cambridge. He has published 8 books and numerous academic papers. His latest book, Heredity, Family and Inequality, was published by MIT Press last year.

His interest in climate change began after using the Stern Review as teaching material. This led to publication of research showing that global warming in the 20^th century is unrelated to carbon emissions. In subsequent research he shows that claims that global sea levels are rising are incorrect. He is currently testing the track records of climate change models used by IPCC to project global warming.

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