In the study, scientists placed highly sensitive measuring equipment two hundred to two hundred seventy meters under the ocean's surface.
VOA: special.2009.07.07
Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.
VOA: special.2009.02.09
It carried oxygen,water, electricity and food for two men for two days on the moon's surface.
VOA: special.2009.07.22
It shows two ducks that have just been shot by a hunter as they fly above the surface of a wide expanse of water.
VOA: special.2010.07.25
"It is a transponder that is put about two feet below the surface.
VOA: standard.2010.07.22
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