Soon no one will admit they were once a warming dupe

AMERICANS who think global warming is caused by human activity, including vehicle and industrial emissions, are now a minority for the first time in nearly two years, according to a CNN/Opinion Research Corporation poll.

Only 45 per cent of the 1041 adults surveyed on December 2-3 believed global warming was a proven fact and mostly caused by human activity, down from 56 per cent in October 2007.

Almost half of people in Britain believe there is no proof that global warming is caused by humans, according to a new poll.