What Are the Current Unsolved Problems in Physics?

[jobyts]

Inspired fron the following link,
http://en.wikipedia.org/wiki/List_of_unsolved_problems_in_physics

Can we have a sticky thread (like the FAQ) to list out all the unsolved problems in Physics (and in other subjects too). We can discuss the unsolved issues in some regular thread (discussion whether it is unsolved or not) and eventually a concise brief description of the problem can be put to the sticky thread.

 

[micromass]

I'm not opposing anything here. But I wonder what good a sticky thread will be if we have the wiki page??