Science: The Bottom of the Sea

Like everybody else, scientists have long wanted to know what Davy Jones's locker holds, besides sunken ships. Oceanographers have done some probing and charting, but the bottom of the ocean is still mostly a vast unknown. A Columbia University geophysicist, Maurice Ewing, recently reported that he had found a way to explore that sunken scene: a camera with which he has photographed the ocean floor at depths up to three miles.

Deep-water photography is not new: cameras dropped with ropes or cables, or enclosed in bathyspheres, have reached depths of half a mile or more. But Ewing, working out of the Woods...

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