It's an escalator made of glass! -- That answer is totally lame; it is the hidden advantages of men in the work force. See: http://jan.ucc.nau.edu/hdh9/e-reserves/Williams_-_The_glass_escalator_PDF-1.pdf
A glass ceiling in an organisation is an unofficially bar to the promotion of certain types of staff, normally women. It is called glass because its not obviously there, but it is in fact.
A glass...
a glass ceiling refers to a barrier between what one wants to acheive and oneself, usually created by society's expectations of what one can or can't do as part of a particular group, race of gender....
It means there's a (mostly invisible) limit to how high you can go. The expression is used mostly in a corporate environment. Some women find that they can't get promoted beyond a certain level of...
"Key to glass" response time refers to the time that passes after a user clicks the mouse button or presses the return key to submit a request to a World Wide Web server to the time that the results...