5 Live Science Podcast - under the sea and beyond the stars

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How deep under the sea can you dive, and what shape should your submarine be?
When you boil water for a second time, why does it seem to be hotter? Just two of the questions answered by Dr Karl this week. Plus do you know about the healing power of dog saliva? It's chic to be geek on the science phone in!

Published on Thursday, 7th April 2011.

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