Vanishing Face of Gaia
I have been reading James Lovelock's latest book. He has what I found an interesting analogy on anedotical evidence versus scientific evidence and uses the example of autism. Some parents have noticed autism symptoms after vaccination on the anedotical side, which is then amplified by the media, yet the science side has found no link. We tend to believe anedotical evidence as usually to do so when it is wrong usually does not cause harm, where as not believing when there is a connection can take you out of the gene pool, so evolution favors the belief in anedotical evidence.
In 2008 it was cooler and many more questioned and rejected global warming based on that anedotical evidence. In 2007 the decline in the ice caps was especially large. A lot more energy went to melting ice caps and that does not show up as temperature change. And actually, temperature change is a poor indicator of global warming right now because melting ice absorbs an enormous amount of energy and helps to moderate the temperature of the Earth. A better indicator of global warming is measuring the sea level, which has been rising. Temperature has huge variations whereas the rising sea level is much more consistent.
There are number of events happening on Earth that I knew were causing the total energy absorption of the Earth to be increasing: the melting of ice caps and a rise in ocean temperature, but there are also a number of things he mentions that I was not aware of, like there is a huge difference in what happens in the ocean if the surface water increases above 12 deg C. Mess with that and you are messing with phytoplankton, which is a major source of oxygen. He refers to "desert oceans."
Something else I did not realise, he says about half the carbon dioxide is coming from respiration of people, and the animals on farms to support the population, so trying to reduce vehicle admissions does very little in the big picture.