The risk of climate change shouldn't be political. That needs to be studied, rigorously. Al Gore may have closed the debate on whether climate change is happeni

The risk of climate change shouldn't be political. That needs to be studied, rigorously. Al Gore may have closed the debate on whether climate change is happening, but to what extent is far from settled. Are X costs worth preventing Y damage, should be the political debate. We don't know Y yet.