A Japanese scientist is wondering if he's discovered the fountain of youth.  There's a microscopic jellyfish that doesn't seem to die.  When it's stressed out, or in great pain, it collapses....and then becomes a youthful pollup, which grows into an adult. 

It's the only animal we know of that rejuvenates itself.  AMAZING!  Many physicians are impressed but bring up the point that jellyfish are spineless and brainless, that this discovery actually helping humans is unlikely.  The Japanese researcher quickly responds- don't be so sure!