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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Bing (known previously as Live Search, Windows Live Search, and MSN Search) is a web search engine (advertised as a  decision engine ) from Microsoft. Bing was unveiled by Microsoft CEO Steve Ballmer on May 28, 2009, at the All Things Digital conference in San Diego, California, for release on June 1, 2009.