The simple fact that gold standard temperature reconstructions according to climate science say that it is not true.
Here...from the GISP2 ice core...the gold standard in temperature reconstruction according to climate science.. As you can see there have been temperature increases over the past 10,000 years that are far greater, and happened far faster than anything we have seen. NASA simply lied.
Earth-orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. This body of data, collected over many years, reveals the signals of a changing climate.
Who is arguing that the climate doesn't change...look at the graph above and you can see just how much it changes...no help from CO2 needed...
The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century.
2 Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many instruments flown by NASA. There is no question that increased levels of greenhouse gases must cause the Earth to warm in response.
If CO2 "traps" heat, why is there no tropospheric hot spot as predicted by the climate models? And why is the amount of energy escaping earth at the top of the atmosphere increasing? If CO2 were "trapping" heat, then the tropospheric hot spot would be there, and the amount of energy escaping the earth at the top of the atmosphere would be decreasing instead of increasing.
Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that the Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly ten times faster than the average rate of ice-age-recovery warming."
Speaking of ice cores drawn from Greenland and Antarctica, take a look at the one above taken from greenland...it clearly shows that except for the little ice age, which the earth is still warming out of, it is cooler now than it has been for damned near all of the past 10,000 years...take a good look at that graph and tell me where you would expect for the temperature to go with or without humans being present?
Ice cores take from antarctic show much the same thing... this one taken from Vostok in antarctica shows that the temperarue of the present is lower than it has been for most of the past 10,000 years...but NASA is perfectly happy to let you believe that the bit of warming we have seen is unusual, unexpected, and unprecedented...none of which are true.