Still Waters Posted January 13, 2016 #1 Share Posted January 13, 2016 Picture a volcano. Now imagine that its main vent extends in a line. Now imagine that this line is so long that it runs for more than 40,000 miles through the dark recesses of all the world's oceans, girding the globe like the seams of a baseball. Welcome to one of the planet's most obscure but important features, known rather prosaically as the midocean ridges. Though long enough to circle the moon more than six times, they receive little notice because they lie hidden in pitch darkness. Oceanographers stumbled on their volcanic nature in 1973. Ever since, costly expeditions have slowly explored the undersea world, which typically lies more than a mile down. The results can make the visions of Jules Verne seem rather tame. http://www.nytimes.c...water.html?_r=0 2 Link to comment Share on other sites More sharing options...
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