Discovery of Global Warming
My training as a physicist and historian of science has given me some feeling for where scientific claims are reliable and where they are shaky. Of course climate science is full of uncertainties, and nobody claims to know exactly what the climate will do. That very uncertainty is part of what, I am confident, is known beyond doubt � our planet's climate can change, tremendously and unpredictably. Beyond that we can conclude (with the Intergovernmental Panel on Climate Change in its 2001 report) that it is very likely that significant global warming is coming in our lifetimes. This surely brings a likelihood of harm, widespread and grave. The few who contest these facts are either ignorant, or so committed to their viewpoint that they will seize on any excuse to deny the danger.
Spencer Weart
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