Guardian: A Greenpeace activist abseils down the Kingsnorth power station in October 2007. Photograph Will Rose/Greenpeace Greenpeace climate change activists who scaled one of Britain’s tallest power station chimneys, causing £30,000 damage, were accused in court yesterday of crossing the line of acceptable protest. Five activists, with food and water to stay four days, climbed the 200-metre chimney at Kingsnorth coal-fired power station near Hoo, Kent, last October. They had …