Who's Afraid of Global Warming?

The blackboard in Prof. Nir Shaviv's office in the Department of Physics at Hebrew University is covered with equations and graphs. He's hunched over the computer, searching for another illustration, another study that will underscore the subject of our talk: the effect of cosmic rays on the earth's warming.

Shaviv is the preeminent Israeli scholar among a handful throughout the world who believe that human beings are not responsible for global warming. The consequences of global warming were portrayed in Al Gore's successful 2006 film, "An Inconvenient Truth," which presents a frightening scenario to which one can hardly remain indifferent: giant ice caps melting, vast areas of human settlement covered by seas that overflow their banks, fierce hurricanes, new strains of bacteria, plagues and death.