April 3, 2008 View all news Scientists have produced further compelling evidence showing that modern-day climate change is not caused by changes in the Sun's activity.By Richard Black, Environment correspondent, BBC News websiteThe research contradicts a favoured theory of climate "sceptics", that changes in cosmic rays coming to Earth determine cloudiness and temperature.The idea is that variations in solar activity affect cosmic ray intensity.But Lancaster University scientists found there has been no significant link between them in the last 20 years.Presenting their findings in the Institute of Physics journal, Environmental Research Letters, the UK team explain that they used three different ways to search for a correlation, and found virtually none.Read more Categorised in: Climate Change