Calvin Beisner, Cornwall Alliance: This is a review about carbon dioxide concentrations for people and nature with historical notes and photos. The change from 180 ppm to 410 ppm in the last two centuries is small compared to historical variations and easily tolerated by nearly all people. Some people may have trouble with higher levels of CO2, but some people have trouble with more cold, more heat, more humidity, more dryness, etc. It is treacherous for alarmists to claim they can control Earth's climate by raising taxes, carbon dioxide sequestration, stopping use of fossil fuels.
Don Bogard, radio-geochemistry, nuclear geochemistry, planetary science: The recent release of part 2 of the US National Climate Assessment report, November 2018, prompted all sorts of press reports and similar activity which predicted future calamity and destruction if the world did not take drastic action now. Two points the report did not make -- 1) the UN-IPCC gives a broad range of possible future temperatures of varying probability and the possibility used for this report is at the improbable high end; and 2) it exaggerated any effects from such an unlikely warming. If these future warming predictions have any reality, an increase in global temperature of 2 degrees Celsius, relative to 19th century temperature, cannot be avoided by any action.
Thorpe Watson, Ph.D. in Physical Metallurgy & Science of Materials. Thirty five year career covering wide range of science disciplines plus 10 year investigation of the climate controversy: As we depart the coolest of the six warm periods since the last glaciation 10,000 years ago (Modern Warm Period), and enter another intervening cool period, truth will eventually prevail. China knows the truth as they commission a major coal-fired power plant every week. Canadian prairie farmers recognize the truth as they face shorter growing seasons. Will a Canadian political party acquire the courage and integrity to blow the whistle on this climate-change hoax before policies based on it completely destroy the Canadian economy?
realclimatescience dot com: Proposing to calculate a single number for global temperature is useless, especially to a tenth of a degree Celcius and using it as proof of catastrophic man-made global warming etc. Then artificially manipulating this data to support false claims of climate catastrophes. They want to force stopping use of fossil fuels, impose climate taxes, force carbon dioxide sequestration. This is one of the worst crimes against humanity. It will not save the world, but put it in unimaginable misery and suffering.