Patrick Moore, a Canadian environmentalist who helped found Greenpeace in the Seventies but subsequently left in protest at its increasingly extreme, anti-scientific, anti-capitalist stance, argues that the green position on climate change fails the most basic principles of the scientific method.
"The certainty among many scientists that humans are the main cause of climate change, including global warming, is not based on the replication of observable events. It is based on just two things, the theoretical effect of human-caused greenhouse gas emissions, predominantly carbon dioxide, and the predictions of computer models using those theoretical calculations. There is no scientific "proof" at all."Moore goes on to list some key facts about "climate change" which are ignored by true believers.
1. The concentration of CO2 in the global atmosphere is lower today, even including human emissions, than it has been during most of the existence of life on Earth.
2. The global climate has been much warmer than it is today during most of the existence of life on Earth. Today we are in an interglacial period of the Pleistocene Ice Age that began 2.5 million years ago and has not ended.
3. There was an Ice Age 450 million years ago when CO2 was about 10 times higher than it is today.
4. Humans evolved in the tropics near the equator. We are a tropical species and can only survive in colder climates due to fire, clothing and shelter.
5. CO2 is the most important food for all life on earth. All green plants use CO2 to produce the sugars that provide energy for their growth and our growth. Without CO2 in the atmosphere carbon-based life could never have evolved.
6. The optimum CO2 level for most plants is about 1600 parts per million, four times higher than the level today. This is why greenhouse growers purposely inject the CO2-rich exhaust from their gas and wood-fired heaters into the greenhouse, resulting in a 40-80 per cent increase in growth.
7. If human emissions of CO2 do end up causing significant warming (which is not certain) it may be possible to grow food crops in northern Canada and Russia, vast areas that are now too cold for agriculture.
8. Whether increased CO2 levels cause significant warming or not, the increased CO2 levels themselves will result in considerable increases in the growth rate of plants, including our food crops and forests.
9. There has been no further global warming for nearly 18 years during which time about 25 per cent of all the CO2 ever emitted by humans has been added to the atmosphere. How long will it remain flat and will it next go up or back down? Now we are out of the realm of facts and back into the game of predictions.