I am <i>absolutely</i> convinced that there is something like this to be discovered.  Remember that what today is 'low hanging fruit' wasn't that at all when it was discovered.  Today, we know much more about other planets than we know about what is undersea.  It's roughly 75% of our planet, and you can bet there are many many discoveries to be made there.<br><br>There are also discoveries to be made in physics that may not appear to be low hanging fruit, but again, what we now consider low hanging fruit certainly wasn't then.