Nine out of 10 Americans now see China as a threat, including almost two-thirds who see it as a major threat, according to latest polling results from the Pew Research Center.

But what exactly do Americans find threatening about China? In the survey, conducted by phone over the course of March, Pew found a list of eight issues that topped the list of what Americans perceive to be the greatest threats from China. At the top of the list was China’s impact on the global environment, with 61% of respondents saying it was a very serious problem for the US.