The latest cutting edge research says that global warming began in the 1830’s, and that it is due to the miniscule amounts of CO2 being generated by humans at the time. Highly paid scientists determined this.
Global warming had started as early as the 1830s, new research shows | CityMetric
The article below was on the front page of the Chicago Tribune more than 30 years ago, showing warming from 1840 to 1930, followed by 50 years of cooling which wiped out almost all of the earlier warming. Somehow the “new research” geniuses above missed that part.
Chicago Tribune Archive | April 23, 1984
In 1990, the IPCC said that global warming began in the 17th century. Somehow the geniuses above missed that part.
In 1981 James Hansen showed the same thing. Global warming began in the 17th century.
Global temperature trend for …. (b) is based on temperatures in central England, the tree limit in the White Mountains of California, and oxygen isotope measurements in the Greenland ice (W. Dansgaard of the Geophysical Isotope Laboratory, University of Copenhagen, pers. comm.), with the temperature scale set by the variations in the last 100 years
Climate scientists write complete garbage like the Nature article all the time, and their equally useless buddies peer-review it.