https://phys.org/news/2018-07-poll-consensus-climate-policy-strong.html

The study was conducted with ABC News and Resources for the Future, a Washington, D.C.-based research organization. A representative sample of 1,000 American adults nationwide were polled from May 7 to June 11, 2018. The margin of error is +/- 3.5 percentage points.

The poll showed that Americans don't realize how much they agree about global warming: Despite 74 percent of Americans believing the world's temperature has been rising, respondents wrongly guessed 57 percent.