Global warming is caused by radiation from the sun, according to a leading scientist speaking out at an alternative "sceptics' conference" in Copenhagen.

Professor Henrik Svensmark argued that the recent warming period was caused by solar activity.As the world gathered in the Danish capital for the UN Climate Change Conference, more than 50 scientists, businessmen and lobby groups met to discuss the arguments against man made global warming.

Although the meeting was considerably smaller than the official gathering of 15,000 people meeting down the road, the organisers claimed it could change the course of negotiations.Professor Henrik Svensmark, a physicist at the Danish National Space Center in Copenhagen, said the recent warming period was caused by solar activity.

He said the last time the world experienced such high temperatures, during the medieval warming period, the Sun and the Earth were in a similar cycle.

Professor Nils-Axel Morner, a geologist from Stockholm University, said sea level rise has also been exaggerated by the “climate alarmists” using computer models.

He said observational data from lake sediments, coast lines and trees show sea levels have remained stable.Professor Cliff Ollier, another geologist from the University of Western Australia, also said the environmental lobby have got it wrong on ice caps. He said the melting of ice sheets is caused by geothermal activity rather than global surface temperatures.

http://www.telegraph.co.uk/earth/cop...radiation.html