To reduce modern climate change to one variable, CO2, or a small proportion of one variable – human-induced CO2 – is not science. To try to predict the future based on just one variable (CO2) in extraordinarily complex natural systems is folly. Yet when astronomers have the temerity to show that climate is driven by solar activities rather than CO2 emissions, they are dismissed as dinosaurs undertaking the methods of old-fashioned science.
Professor Ian Plimer, Heaven And Earth, April 15, 2009
