Scientists find unexpected key to flowering plants' diversity

What began with an off-the-cuff curiosity eventually led Joe Williams to hang from the limbs of a tree 80 feet above the soil of northeastern Australia.

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<p><a href="http://www.physorg.com/news136483600.html">Scientists find unexpected key to flowering plants' diversity</a></p> <p>What began with an off-the-cuff curiosity eventually led Joe Williams to hang from the limbs of a tree 80 feet above the soil of northeastern Australia.</p>