Are the sites similar to mathoverflow in other sciences related to mathematics? statistics, computer science, physics, economics, etc?


Let me explain what I mean by "similar": those are sites devoted to posing questions and answers,in these areas. I do not insist on the precise format of "mathoverflow" (reputation points, badges, etc.). But I am looking for general multi-participants forums like this one, so scientific blogs do not qualify.



Something like mathoverflow in other sciences
Here is a brief list of science-related sites that run on the same platform as Math Overflow:


* Science
	+ [Science Stack](http://sciencestack.com/)
	+ [asksci.com](http://asksci.com/)
* Physics
	+ [physics.stackexchange.com](https://physics.stackexchange.com/)
	+ [PhysicsOverflow](http://physicsoverflow.org/)
* Electronics
	+ [Electronics Exchange](https://electronics.stackexchange.com/)
* Programming
	+ [Stack Overflow](https://stackoverflow.com/)


A complete list of these sites is available [here](https://meta.stackexchange.com/questions/4/list-of-stackexchange-sites/5#5).


The one thing that I personally feel is missing is a lower-level mathematics site (a Math Underflow, if you will). I understand the desire to keep Math Overflow relevant and interesting for professional mathematicians, but there is currently no equivalent site for amateurs and students.


**Update:** (Sept 2010)A math site for [university level mathematics exists now](https://math.stackexchange.com/).


There are also sites for [theoretical computer science](https://cstheory.stackexchange.com/) and for [statistics](https://stats.stackexchange.com/).


(April 2011) There is a [TEX Q/A site](https://tex.stackexchange.com/)!


(September 2011) [Area 51: science](http://area51.stackexchange.com/categories/7/science) contains new proposed stackexchange sites related to science. We can mention especially proposals for [Theoretical physics (and mathematical physics)](http://area51.stackexchange.com/proposals/23848/theoretical-physics) (closed), economics (closed), research economics, game theory, [computational sciences](https://scicomp.stackexchange.com/), [philosophy](https://philosophy.stackexchange.com/) (the site is running), [numerical models and simulations](http://area51.stackexchange.com/proposals/1907/numerical-modeling-and-simulation), Mathematica, mathematics in german. 


