I'm at a workshop in Physics - I've attended each year since 2001. The gender imbalance is somewhat in favor of the males (perhaps 60-65% male), but the AAPT organization has made great efforts to search out women and minorities for the program. For the women, it's a great networking opportunity, as well as a chance to have fun with other women in Physics.
Joanne Jacobs has a link to a NYT article about efforts to increase the numbers of women, and why the gender imbalance occurs.
If the gender imbalance persists in physics, engineering and computer
science, will those departments go the way of men’s wrestling? Or,
perhaps, Title IX could be satisfied by creating Women’s Way of Knowing
Physics. Trust me, this is not what women scientists want.
This is a serious issue. By insisting that numbers have to be equal, Physics & Engineering programs could have limits put on their programs, and grind Physics education to a virtual.
It also isn't fair - do dance programs refuse to accept more women until sufficient men have enrolled? Will cosmetology schools have to troll the streets for men, until the imbalance is corrected?
That's just silly - whatever happened to Freedom of Choice? Or does that just apply when it's convenient?