It is approximately 1,500 miles long. The deepest portion of the Mariana Trench is the Challenger Deep, a narrow portion at the southern end, which is roughly 36,000 feet deep. The water temperature in this area is slightly above freezing. The world's ocean trenches remain largely unexplored due to the immense pressures at such depths.
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Home : Bing: What Is Bing? Bing is a search engine created and operated by Microsoft, replacing its former Live Search, Windows Live Search, and MSN Search offerings.Microsoft CEO Steve Ballmer revealed the search engine in May 2009.