Just got pointed to this: These men would like you to kindly shut up about gendered conferences | Feminist Philosophers. It discusses a painful example of Gender Bias associated with Science conferences. In this example a charity "or, a supposed charity" is organizing a meeting featuring only male speakers. And they included a FAQ on the meeting website to explain why there were only men:
More about this is available now on Jezebel.
Note - the same group organized another meeting also with only male speakers. http://www.entangled-bank.co.uk/dawkins-in-bristol.html