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15/10/2011 GMT
After more than 50 years, a new wave of explorers are racing to go back to the Mariana Trench, the deepest place on the planet.
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The eclipses, spacecraft and astronauts changing our view of the Universe
The Curious Cases of Rutherford and Fry
A pair of scientific sleuths answer your perplexing questions. Ask them anything!
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Discovery
Explorations in the world of science.
