Business Green: An influential group of peers yesterday called on politicians, businesses and the media to take a more dispassionate stance on the so-called "climategate" controversy, warning that exaggerated concerns over the accuracy of climate science were in danger of delaying action to address climate change risks. Writing in a letter published in the Daily Telegraph, the group of 15 Lords urged "the media, the public, policy makers and the scientific community to calm their nerves and take a …