These are a few of my favorites:
#2 Man-made carbon dioxide emissions throughout human history constitute less than 0.ooo22 percent of the total naturally emitted from the mantle of the earth during geological history.
#3 Warmer periods of the Earth's history came around 800 years before rises in CO2 levels.
#11 Politicians and activists claim rising sea levels are a direct cause [sic result?] of global warming but sea levels rates have been increasing steadily since the last ice age 10,000 years ago.
#18 Despite activist concerns over CO2 levels, CO2 is a minor greenhouse gas, unlike water vapour which is tied to climate concerns, and which we can't even pretend to control.
#33 Today's CO2 concentration of around 385 ppm is very low compared to most of the earth's history - we actually live in a carbon-deficient atmosphere.
#67 Global temperatures have not risen in any statistically-significant sense for 15 years and have actually been falling for nine years.
#78 A proper analysis of ice core records from the past 650,000 years demonstrates that temperature increases have come before, and not resulted from, increases in CO2 by hundreds of years.
#83 The "Climate-gate" scandal revealed that a scientific team had tampered with their own data so as to conceal inconsistencies and errors.
Note that I haven't "fact-checked" all 100. And, some of the 100 aren't even reasons. And some of them have a few typos. But, what the heck, it goes to show you - again - that there is no consensus on global warming. Except, maybe, that it isn't warming right now.