Here is a summary of the argument in support of man-made global warming with its approximately 120-year time perspective:

 

The following chart offers a 10,000-year perspective of Earth’s relative temperatures, which more accurately reflects the totality of the real climate debate (click on the chart to enlarge).

Here’s a short video recap of the significance of having this much broader perspective.

Enhanced greenhouse warming attributable to our profligate consumption of fossil fuels has established itself as perhaps the most contentious environmental issue currently being debated in the international political arena.
To a large extent, the debate over whether societies should undertake actions to mitigate the potentially adverse effects of climate change focuses on uncertainties in climate predictions and societal impacts. In an effort to reduce some of the uncertainty, the climate community has expended considerable efforts to obtain detailed records of past climates, recognizing that the past may hold the key to our future.

The Two-Mile Time Machine by Richard Alley tells the captivating story of how one such record reconstructed from the GISP2 core, drilled through the more than 3-km thick Greenland Ice Sheet, has revealed startling clues about past climates and shattering many of our ideas on how climate operates.

In light of the seriousness of climate mitigation measures already underway, such as drastically curtailing the use of fossil fuels and limiting farm production it brings a measure of urgency that we re-examine all climate-related data.

Alley’s 10,000-year perspective of Earth’s climate behavior calls into question the significance of the relatively small sample size of the temperature data from which man-made global warming assumptions are based (see the RED BOX found at the lower right-hand margin of the above chart). There is simply no way that such a small fraction of the climate record can justify the apocalyptic rhetoric being touted by a large group of relatively uninformed climate alarmists who, in the name of science, insist that what we are experiencing at present is an “unprecedented” rise in global temperatures.

The reality is that for most of the last 10,000 years, people like you and me have lived and prospered in much warmer climates than we have today. The “Medieval Warm Period” is a case in point. Here is a short 4-minute video primer on ice core dating and temperatures during the medieval warm period.

As for CO2 emissions, here is a recent research paper published in Journals – Health-Physics (World Atmospheric CO2, Its 14C Specific Activity and Emissions (1750–2018)). Its conclusion? “Our results show that the percentage of the total CO2 due to the use of fossil fuels from 1750 to 2018 increased from 0% in 1750 to 12% in 2018, much too low to be the cause of global warming.“

When challenged, “Climate Zealots” dismissively proclaim “Just follow the science.” while much of the data supporting their climate assumptions remains unavailable to independent researchers. Naturally, a lack of data transparency has a tendency to make serious researchers a bit skeptical (or what climate zealots call climate deniers). It’s hard for serious researchers to forget the lessons of Climategate.  

Science is about finding truth, challenging assumptions, making hypotheses, gathering quality data, and figuring out which hypothesis best fits the observed data. More data is always better.