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11 June 2019 Download PDF H20 (water vapor,) CO2 (carbon dioxide), and CH4 (methane) and some other very minor trace gases are so-called “greenhouse gases” because they absorb infrared energy.  Water vapor is by far the largest of these so called greenhouse gases. However, be careful to avoid the common misunderstanding that the earth and its atmosphere behave like a garden greenhouse; that is not true.  Greenhouses are closed systems except to incoming energy.  Earth is an open system, open to receive energy, as well receive gases and other matter from space and also open to transmit energy, gases and …

MIT Technology Review A prime piece of evidence linking human activity to climate change turns out to be an artifact of poor mathematics. by Richard Muller | October 15, 2004 Progress in science is sometimes made by great discoveries. But science also advances when we learn that something we believed to be true isnt. When solving a jigsaw puzzle, the solution can sometimes be stymied by the fact that a wrong piece has been wedged in a key place. In the scientific and political debate over global warming, the latest wrong piece may be the hockey stick, the famous plot …