Popular Science -
11 Mar 2013 15:58

Which is a bargain, actually. The ocean covers nearly three quarters of our planet, yet humans have probed a mere 5 percent of it. To better explore its greatest depths, scientists will soon board the revamped Alvin, the workhorse of human-operated deep-submergence vehicles. Owned by the U.S. Navy and operated by Woods Hole Oceanographic Institution on Cape Cod, the sub has logged 4,664 dives since 1964. It has explored the Titanic wreck 12 times, retrieved a lost live H-bomb, and survived a swo...
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