Internal clocks keep all living things ticking -- even you

Like kids taking apart a fine Swiss watch, scientists are laboring to understand what makes the biological clock that's inside every living creature tick.

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<p><a href="http://www.physorg.com/news153300166.html">Internal clocks keep all living things ticking -- even you</a></p> <p>Like kids taking apart a fine Swiss watch, scientists are laboring to understand what makes the biological clock that's inside every living creature tick.</p>