ST. JOHN'S, NFLD. - Canadian scientists have found some intriguing similarities between grooves caused by icebergs and marks on the surface of the Red Planet. Chris Woodworth-Lynas normally sets his sights on the ocean floor, studying how icebergs scour the seabed. Oil and gas companies need the information to lay down pipelines. After work, Woodworth-Lynas applied his skills to Mars. "There has been theories that there was perhaps an ocean or series of oceans in the north polar regions," said Woodworth-Lynas. When Woodworth-Lynas downloaded NASA's orbital photos of Mars from 1997, he was able to resolve features. On their own...