The United Nations IPCC publishes a report on the subject of climate change, which the United Nations contends is “authored” by about 600 scientists. However unlike as the custom in other ordinarily science, these scientists are not permitted power of approval or disapproval of the final drafts of their work. They can comment on the draft text, but are useless because those comments are not included in the final text. What the final text does conform to is UN's objective of garnering support for world taxation and rationing of energy. Hence we have opposing groups of scientists with opposing views on anthropogenic global warming.
Here are some excerpts from an article of a summary of peer-reviewed research
( pdf ). Information cited in this linked article is referenced at the end by 132 references.
First lets take a look at surface temperatures over a 3000 year period in a two million square mile region of the Atlantic Ocean in the Sargasso Sea.
Nothing looks alarming with a change over the entire 3000 year period of about 3C. In fact it appears we are just getting back to normal from the effects of the "Little Ice Age" which ended about 1800. The results are determined by isotope ratios of marine organism remains in sediment at the bottom of the sea. In fact if you look at the Medieval Warm Period we are not anywhere close, and the world obviously came through that. In fact, a warmer climate will bring an earlier timing of spring events and a later arrival of fall events, or in other words a longer growing season with bumper crops: although Asian rice crops may suffer.
World glaciers regularly grow and melt in a delayed correlation with climate cooling and warming trends, with the melting lagging temperatures by about 20 years. Lets look at the length of 169 glaciers from 1700 to 2000 before and after the introduction of CO2.
As we can see the melting is on the same trend today as it has been since the end of the Little Ice Age. There is melting yes, but no increase in the rate of glacial melting at all since CO2 has increased drastically. Yet alarmists will look at the melting and say: "Oh my gosh are we to do? The polar bears are doomed!" Well there are no polar bears. If you look at the chart below you will see that they all had to die out in the Roman Warm Period and the Medieval Warm Periods. Just kidding of course.More here and better display of the above images