Rising waters threaten Venice, Italy.
Sixty-two percent of those polled said that ISIS was a "major threat" to their country, while 61 percent also identified global warming as a major threat.
Concerns about ISIS were concentrated in Europe, the Middle East, Asia and the United States, while climate change worries came from 13 countries mostly in Latin America and Africa.
"In general, there has been little change in the global threat assessment since the last time these questions were asked," the report said. "But worries about the U.S. and its power and influence have increased in many countries in Europe and around the world since the election of Donald Trump."