Yeast biology yields insights into human knowledge expansion

How does human knowledge expand over time? Intriguing as the question is, it's not easy to investigate, due to the difficulty of measuring knowledge and its spread.

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<p><a href="http://www.physorg.com/news156783747.html">Yeast biology yields insights into human knowledge expansion</a></p> <p>How does human knowledge expand over time? Intriguing as the question is, it's not easy to investigate, due to the difficulty of measuring knowledge and its spread.</p>