Women make 80 cents to the dollar, what's up with that?

I realize that women's rights and the underrepresentation of women in high levels corporate America is not a new obstacle, but I was reading a new article on it, so it came to mind. Apparently women are up to 80 cents on the dollar for the same work. What's scary is that while women are about half the work force, they make up only 3 percent of the CEOs at the top 500 companies.

Even looking at where I work which is about 90 percent (or more) female, the majority of men who work here hold management positions. It makes me wonder what it will take --or rather how long--before leadership at all organizations are more reflective of society. It's also weird that one of the areas that I am in is one that has basically equal representation and earning potential (Advertising and Promotional Managers). I always wonder what industries or areas are dominated by females and why. Non-profit tends to be predominantly female and I think it's our incessant need to feel like what we're doing has meaning to it.

Either way, it's a continuous struggle and not one that's likely to be solved during my career--although I'll keep wishing it would.