Ep. 43: Welcome to the wasp hotel

<p>Walking through an oak woodland, you might encounter trees with strange fruit. Some are small, fuzzy, or red &quot;Hershey Kiss&quot; shapes while others look like large, papery brown spheres. These aren&#39;t fruits. Dr. Matt Buffington of the U.S. Agricultural Research Service - formerly at UCR - joins us to explain these strange structures that act like hotels with room service for tiny wasps.</p>