 Undersea tourists and souvenir hunters are hastening the decay of the Titanic, says U.S. explorer Bob Ballard, who discovered the world's most famous shipwreck nearly 20 years ago. In a visit last June to the site of the Titanic -- his first since 1985 -- Ballard was shocked at how fast the wreckage had deteriorated. Now he wants Congress to pass legislation giving greater protection to the sunken vessel. FULL STORY | 
