If you believe global warming is cyclical and mostly natural; human contribution is minor and not dangerous; and attempting to prevent human influence by cuts in carbon-dioxide emissions would cost trillions of dollars, trap billions of people in developing countries in poverty, and so do more harm than good … … then you need to know something and be prepared to act: President Barack Obama has said that “the most important policy he could address in his second term is climate change.” … [Read more...]