Research at Cornell University updates a 2013 paper which found 97% of studies published between 1991 and 2012 supported the idea that human activities are altering Earth’s climate. “It’s pretty much case closed for any meaningful public conversation about the reality of human-caused climate change,” said Mark Lynas, a visiting fellow at Cornell's Alliance for Science and first author of the study, which published Oct. 19 in the journal Environmental Research Letters.
Of the 10,929 earth scientists invited to take the survey, 2,780 responded, and 91 said the Earth is getting warmer mostly because of human activity. In 2009, those saying so were 80%. "All of the most actively publishing climate experts – those who had published 20 or more climate papers each between 2015 and 2019 – accept that global warming is human-caused," the Institute of Physics said.