Americans See Global Warming as Serious Problem Many adults in the United States are concerned about climate change, according to a poll by Rasmussen Reports. 47 per cent of respondents think global warming is a very serious problem, while 26 per cent deem it as somewhat serious. (Angus Reid Global Monitor) - Many adults in the United States are concerned about climate change, according to a poll by Rasmussen Reports. 47 per cent of respondents think global warming is a very serious problem, while 26 per cent deem it as somewhat serious. in Public bookmarkswith controversyglobalhistoryissuesmythnewsofpictureswarming