You aim at some astonishing peak or a swerve of the river, then examine the screen on the back of your digital camera. A rogue, blurring tree has dived across like a goalkeeper to block your shot.

你把镜头对准令人赞叹的山峰，或者蜿蜒曲折的河流，按下快门后你去看数码相机的显示屏幕——一棵淘气的树像牧羊人那样站在那里遮挡了你的镜头。

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Back in the 16th Century, the point where the St Lawrence River tightens became a base for a rogue collection of hard-bitten survivalists, who spent months venturing deep into the heart of Innu territory to the trading posts at Lac St-Jean.

BBC: Qu��bec's wood runners

The brutal truth is, Washington's finest natural asset, thousands of cherry trees, currently blossoming in shades of white and pink, are being destroyed by two rogue rodents seemingly intent on building a dam across this city's Potomac River.

BBC: By BBC Washington Correspondent Stephen Sackur