The first thing people should know about our planet and its climate is that it is chaotic and that it is changing all the time. There has never been a period when it was stable. It is always warming or cooling. The number and intensity of extreme weather events increases or decreases over extended periods and we can't explain why.
Some scientists made educated guesses about the causes of very-long-term changes, such as ice ages, but we do not have a satisfying explanation based on a complete understanding of what drives the climate. There is no such thing as a "climate theory".
If we had such an theory, we could make long-term predictions, but we can't. There's a good chance that there will be another ice age, but we can't predict it with any certainty. We can only speculate.
We don't know what caused the Medieval Warm Period - which was both, global and warmer than the current temperatures.
We don't know what caused the little ice age. We only know that after several centuries of extreme cold, the world started warming again about 300 years ago - and, needless to say, humanity had nothing to do with it. We currently live in this long-term warming trend, which progressed cyclically through a series of warming and cooling episodes.
Neither the long-term trend nor the shorter warming and cooling episodes are driven by CO2. There is absolutely no evidence for any correlation.
Here is extensive scientific documentation to prove the claim wrong:
In 2013, the IPCC admitted that the "slowdown" was CENTRAL to their new report:
https://www.bbc.com/news/science-environment-24173504
The IPCC modeler Dr.von Storch admitted that if temperatures did not start rising much faster within 5 years, they would have to abandon the CO2 climate warming hypothesis:
http://www.spiegel.de/international/world/interview-hans-von-storch-on-problems-with-climate-change-models-a-906721.html
In October 2014, NASA was so desperate that they looked for the "missing heat" in the abyss ... and found nothing!
http://science.nasa.gov/science-news/science-at-nasa/2014/06oct_abyss/
No heating of the oceans. In fact, neither satellite measurements nor the Argo buoy project that measured sea temperatures worldwide found any warming. The Argo buoys even found that the oceans were COOLING. Which NASA "fixed" by ... eliminating the data records that showed cooling and then writing a lengthy article about why it was ok to commit such scientific fraud.
Tempertures did NOT rise, but in 2015, the NOAA "discovered" the "missing heat" by lowering the temperatures of the past and raising the temperatures of the present! Just in time for Obama's paticipation in the Paris conference where he would talk about the dire consequences of this "Global Warming".
Take what they did with Reykjavik: they changed a record heat spike in 1940 into a very low temperature ... then had to change it back, because the change was fraudulent. But they did this to THOUSANDS of records!
https://data.giss.nasa.gov/cgi-bin/gistemp/stdata_show_v3.cgi?id=620040300000&ds=7&dt=1
https://data.giss.nasa.gov/cgi-bin/gistemp/stdata_show_v4.cgi?id=IC000004030&ds=14&dt=1
Two more stations where they changed a COOLING to a WARMING trend:
https://data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=308860860000&dt=1&ds=1
https://data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=308860860000&dt=1&ds=14
https://data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=303825860000&dt=1&ds=1
https://data.giss.nasa.gov/cgi-bin/gistemp/show_station.cgi?id=303825860000&dt=1&ds=12
So all this climate change will be "dangerous" to the "fragile environment" of our planet and those who would suffer the most live in hot climates?
EXCEPT that our climate is:
All the alleged "risks" are in computer models that have the same validity as economic predictions by governments. Based on the modelers' own admission:
https://www.pnas.org/content/116/49/24390
The model temperature predictions diverge by more than the ENTIRE estimated warming since 1960.
They ignore that 1940 was only 0.2C cooler than 1998, which was hotter than any year since then.
Doomsayers always existed - it is a constant throughout human civilization. Doomsayers gain money and power over other people who fall for their lies.
What do ALL doomsayers have in common? 100% of their predictions FAILED!
There have been more than 50 predictions of doom since the 1960s (Club of Rome, Dr.Ehrlich, Earth Day, global cooling, global warming, sea level rise, Arctic melting, Antarctic melting, end of snow, deadly pollution etc.) - 100% WERE COMPLETELY WRONG!
Not even in the ballpark they predicted.
Professor Richard Muller, co-founder of Berkeley Earth Surface Temperature: "Looking at the data, I can see no evidence of human influence"
https://www.youtube.com/watch?v=Moum_SZ5NNY
Prof. Muller was already very upset in 2004 when he found that Michael Mann's hockey stick model was completely wrong. He gave him the benefit of doubt and assumed it was an honest mistake, but it was intentional fraud:
https://www.technologyreview.com/s/403256/global-warming-bombshell/
As for the ice core studies, they mostly confirmed that "We live in the coldest period of the last 10.000 years", as explained in this video by glaciologist Jørgen Peder Steffensen as he takes us back in time to the Greenland icecores and reveals the secrets from the past:
It's really interesting how many people keep claiming that ice core data supposedly shows much lower CO2 levels for the past 800'000 years, but keep forgetting that the ice core data still shows MUCH WARMER TEMPERATURES, which totally destroys the alleged temperature - CO2 correlation. Obvious conclusion: either CO2 has no influence at all on temperature or the influence is so small as to be negligible.
Here is an article summing up all the data fraud that has been used to convince people that there is severe global warming and that it is the fault of humanity:
https://www.zerohedge.com/geopolitical/global-warming-fraud-exposed-pictures
AT WHAT POINT DO PEOPLE STOP BELIEVING THOSE LIARS?