Hugh Pickens writes writes: "Dr James Hansen, director of the Nasa's Goddard Institute for Space Studies, who first made warnings about climate change in the 1980s, says that public skepticism about the threat of man-made climate change has increased despite the growing scientific consensus and that without public support it will be impossible to make the changes he and his colleagues believe need to occur to protect future generations from the effects of climate change. "The science has become stronger and stronger over the past five years while the public perception is has gone in completely the other direction. That is not an accident," says Hansen. "There is a very concerted effort by people who would prefer to see business to continue as usual. They have been winning the public debate with the help of tremendous resources." Hansen's comments come as recent surveys have revealed that public support for tackling climate change has declined dramatically in recent years with a recent BBC poll finding that 25% of British adults did not think global warming is happening and over a third saying many claims about environmental threats are "exaggerated" compared to 24 per cent in 2000. Dr Benny Peiser, director of skeptical think tank The Global Warming Policy Foundation, says it's time to stop exaggerating the impact of global warming and accept the uncertainty of predictions about the rate of climate change. "James Hensen has been making predictions about climate change since the 1980s. When people are comparing what is happening now to those predictions, they can see they fail to match up.""