Our ruling: Sanders said, "Climate change is directly related to the growth of terrorism." - We couldn’t find any evidence of a "direct" relationship between climate change and terrorism, though many reports have noted an indirect link. There are, of course, many other factors that contribute to terrorism, including religious and ethnic tensions and political repression. We rate Sanders' claim Mostly False.
A Central Intelligence Agency report from 1974 warned Earth’s “climate is returning to that of the neo-boreal era… an era of drought, famine, and political unrest in the western world.” The report cited famines in the Soviet Union, drought in Latin America and flooding in the U.S. as examples of how global cooling was wreaking havoc on countries.
This sounds eerily similar to arguments Sanders made during the Democratic presidential debate.
Interestingly enough, the Pentagon has the same concerns about global warming as the C.I.A. did about global cooling in the 1970s. “The impacts of climate change may cause instability in other countries by impairing access to food and water, damaging infrastructure, spreading disease, uprooting and displacing large numbers of people, compelling mass migration, interrupting commercial activity, or restricting electricity availability,” the Pentagon reported in 2014.
Tony Heller of RealClimateScience.com: "This warming trend since 1970 does not exist in the thermometer data, so where does it come from?
There has been a large decrease in the number of stations reporting data over the past 30 years. But in the final adjusted data set, they use temperatures for all 1,218 stations regardless of whether or not there is actually any thermometer data.
In other words, they are simply making up data. More than 40% of the data in the final data set is now fabricated.
NOAA US temperature graphs are completely fraudulent, and they are being adjusted upwards to track CO2.
Many of the world’s leading models are now projecting warming rates that most scientists, including the modelmakers themselves, believe are implausibly fast. In advance of the U.N. report, scientists have scrambled to understand what went wrong and how to turn the models, which in other respects are more powerful and trustworthy than their predecessors, into useful guidance for policymakers. ... Climate models used by next month’s Intergovernmental Panel on Climate Change report project more warming over an 1850–1900 baseline than those in a 2013 report. Scientists are using recent observed warming to rein them in.