Arrests after gas protesters scale chimney stacksGreenpeace said eight protesters were involved in the demonstrationA group of environmental protesters have climbed to the top of two 75m (246ft) high chimney stacks at a gas-fired power station in Nottinghamshire. Greenpeace said eight activists had scaled two of the chimney stacks at Staythorpe Power Station near Newark in a protest over the role gas played in setting electricity prices. Nottinghamshire Police said four protesters came down before midday, while the others came down shortly after 16:30 BST. The eight activists were arrested for aggravated trespassing and remain in custody. A spokesperson for RWE, the energy company which owns the facility, said the power station remained operational and the firm's priority was the safety of everyone on site.