43% of Americans are blithering morons.

From Daily Mail:

The number of Americans who believe in global warming has plummeted in just three years, a poll has revealed.

Some 57 per cent believe that world temperatures are rising - a drop of 20 points - while only one in three thinks humans are causing climate change.

It comes as the U.S. Senate prepares to debate legislation that will curb greenhouse gas emissions.

Last month, Cardiff University found an increasing number of Britons are also becoming more sceptical about climate change.

According to the U.S. survey, carried out by think-tank the Pew Research Centre, 36 per cent of the 1,500 adults questioned believe human activities - such as pollution from power plants and vehicles - are behind an increase in global temperatures. This was down from 47 per cent in 2006.