Climate-gate has struck again: A new investigation reveals crucial flaws in data about climate change, as well as attempts by leading researchers to cover up their own mistakes. The study by London paper The Guardian relies upon e-mails leaked by hackers from the University of East Anglia's climatic research unit (CRU). The paper found serious flaws in measurements from Chinese weather stations, noting that documents from them could not be produced. The leaked e-mails revealed that those monitoring stations were moved several times, meaning data from them may be unreliable. This data was key evidence behind the claim that the growth of cities (which are warmer than countryside) isn't a factor in global warming and was cited by the U.N.'s embattled climate science body, the Intergovernmental Panel on Climate Change, to bolster statements about rapid global warming in recent decades. Worse, adds The Guardian, CRU chief scientist Phil Jones withheld information requested under freedom of information laws. Subsequently a senior colleague told him he feared that Jones's collaborator, Wei-Chyung Wang of the University at Albany-SUNY, had "screwed up," adds the paper.