Republicans' trust in scientists studying the environment has fallen 9 percentage points to 56 percent since 2006, while trust among Democrats and independents has risen. Among the three groups, Democrats' trust is highest at 87 percent.

Source: “American Public Opinion on Global Warming,” Political Psychology Research Group, Stanford University, accessed Feb. 24, 2021, https://tinyurl.com/52ykzk2b

Data for the graphic are as follows:

Year Percentage of Democrats Percentage of Independents Percentage of Republicans
2006 81% 71% 65%
2007 80% 73% 70%
2008 75% 68% 60%
2009 83% 68% 56%
2010 83% 68% 62%
2012 81% 57% 56%
2013 80% 63% 46%
2015 82% 71% 56%
2018 82% 67% 62%
2020 87% 74% 56%

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