Independent: A climate scientist who says he has been subjected to a vitriolic hate campaign has denounced the way that American billionaires have been able to secretly finance the climate-sceptic organisations that have attacked him.
Professor Michael Mann of Pennsylvania University, who has been targeted by climate-change sceptics for his work on global temperature records, said it was wrong for wealthy individuals such as the oil billionaire Charles Koch to surreptitiously finance the counter-movement...