Another question related to the first; is the fine-structure constant actually constant? <a href="http://en.wikipedia.org/wiki/Fine-structure_constant" rel="nofollow">http://en.wikipedia.org/wiki/Fine-structure_constant</a>
The Wikipedia article [1] is better than this one, IMO.<p>1: <a href="http://en.wikipedia.org/wiki/List_of_unsolved_problems_in_physics" rel="nofollow">http://en.wikipedia.org/wiki/List_of_unsolved_problems_in_ph...</a>