Our most recent nationally representative survey finds that More than half of Americans (58%) believe climate change is mostly human caused. That’s the highest level measured since our surveys began in 2008. By contrast, only 30% say it is due mostly to natural changes in the environment, matching the lowest level measured in our November 2016 survey.
Four in ten Americans (39%) think the odds that global warming will cause humans to become extinct are 50% or higher. Most Americans (58%) think the odds of human extinction from global warming are less than 50%. CONT.
Yale Program on Climate Change Communication & George Mason U. Center for Climate Change Communication