---
title: "Global Warming: A Hoax … with Serious Ramifications"
description: "A third of those who say there is no solid evidence of global warming still consider it a serious problem."
date: "2009-11-10"
authors:
  - name: "Russell Heimlich"
    job_title: "Former web developer"
    link: "https://www.pewresearch.org/staff/russell-heimlich/"
url: "https://www.pewresearch.org/short-reads/2009/11/10/global-warming-a-hoax-with-serious-ramifications/"
---

# Global Warming: A Hoax … with Serious Ramifications

From April 2008 to October 2009 the percentage of Americans saying there is solid evidence of global warming has fallen from 71% to 57%. A third of the country now says there is no evidence of global warming, up from 21% last year. Views of the evidence of global warming is related to how seriously people seeearth warming as a problem. Interestingly, among global warming skeptics a third still sees it as a serious problem (10% very serious, 23% somewhat serious). Roughly two-thirds of those who do not say global warming evidence exists say it is not a problem. Among the 18% of the public who say there is evidence of global warming, but that it is caused by natural phenomena a majority say it is a serious problem, with 27% saying it is a very serious problem. Americans who say global warming exists and is man made (47% of the public) are unanimous in their opinion thatearth warming is a serious problem (97%), with two thirds describing it as a very serious problem. [Read More](https://www.pewresearch.org/pubs/1386/cap-and-trade-global-warming-opinion)