Mariana Trench: James Cameron hits the world's floor -- and returns

The explorer and filmmaker reached a depth of 35756 feet (10898 meters) at 7:52 am Monday local time (2152 GMT Sunday) in the Mariana Trench in his specially designed submersible, according to mission partner National Geographic.Yesterday at noon, local time (10 p.m. ET), James Cameron's “vertical torpedo” sub broke the surface of the western Pacific, carrying the National Geographic explorer and filmmaker back from the Mariana Trench's ChallengerThe Mariana Trench, a giant

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