Race to the Bottom of the Ocean: Why go down?

Date
Thursday, February 23, 2012
Source
BBC
Summary

As a new wave of explorers race to reach the deepest part of the ocean, researchers too are realising the scientific potential that lies at the bottom of the sea.

Article Link: 
http://www.bbc.co.uk/news/science-environment-17041438
Image Link
http://news.bbcimg.co.uk/media/images/57087000/jpg/_57087494_challenger_deep_trench_624.jpg